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421.
National Environmental Act (Nos.47of 1980 & 56 of 1988) complete with all regulations
Edition: 2nd
Language:
Publication details: Environmental Foundation Ltd. Colombo 1993
Availability: Items available for reference: National Science Library & Resource Center: Staff collection (1).

422.
Environmental Audit the pilot studies
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Publication details: CRDS Colombo 1195
Availability: Items available for reference: National Science Library & Resource Center: Staff collection (1).

423.
Proceedings of the symposium on "Medicinal Plants-Biodiversity and economy"
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Publication details: SLAAS Colombo 1996
Availability: Items available for reference: National Science Library & Resource Center: Staff collection (1).

424.
Report on the rural energy centre (REC Pattiyapola by
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Publication details: NSC Colombo ; 1980
Availability: Items available for reference: National Science Library & Resource Center: Staff collection (1).

425.
Resistance to insecticides used in public health and agriculture proceedings of an International workshop, 22-26 February 1982
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Publication details: NARESA Colombo ; 1982
Availability: Items available for reference: National Science Library & Resource Center: Staff collection (1).

426.
Workshop on natural products Colombo, Sri Lanka, June 1975
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Publication details: NSC Colombo ; 1975
Availability: Items available for reference: National Science Library & Resource Center: Staff collection (1).

427.
Information systems for promotion & utilization of technology by
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Publication details: NARESA Colombo ; 1988
Availability: Items available for reference: National Science Library & Resource Center: Staff collection (1).

428.
25th anniversary celebrations of NARESA proceedings of the seminar on new directions in science & technology in Sri Lanka 4-5 Dec. 1993, NARESA, Colombo
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Publication details: NARESA Colombo ; 1993
Availability: Items available for reference: National Science Library & Resource Center: Staff collection (1).

429.
Some doctors celebrated for their non-medical achievements by Series: A.C.E.Koch memorial oration ; No.7
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Publication details: Physiological Society Colombo ; 1993
Availability: Items available for reference: National Science Library & Resource Center: Staff collection (1).

430.
Critical analysis of the role of the judiciary in society by Series: A.C.E.Koch Memorial Oration ; No.05
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Publication details: Physiological Society Colombo ; 1991
Availability: Items available for reference: National Science Library & Resource Center: Staff collection (1).

431.
Sri Lanka beach mineral sands occurrence, global trends and current issues by
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Publication details: Ministry of Industrial Development Colombo ; 1996
Availability: Items available for reference: National Science Library & Resource Center: Staff collection (1).

432.
Graphite in Sri Lanka occurrence, global trends and current issues by
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Publication details: Bogala Graphite Lanka Ltd. Colombo ; 1996
Availability: Items available for reference: National Science Library & Resource Center: Staff collection (1).

433.
Professional management in irrigation systems a case study of performance control in Mahaweli System H, Sri Lanka by Series: IIMI Country Paper Sri Lanka ; No.01
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Publication details: IIMI Colombo 1989
Availability: Items available for reference: National Science Library & Resource Center: Staff collection (1).

434.
Development and field-installation of a mathematical simulation model in support of irrigation canal management
Language:
Publication details: IIMI Colombo 1993
Availability: Items available for reference: National Science Library & Resource Center: Staff collection (1).

435.
Irrigation investment trends in Sri Lanka new construction and beyond by
Publication details: IIMI Colombo 1991
Availability: Items available for reference: National Science Library & Resource Center: Staff collection (1).

436.
Advancements in IIMI's research 1989-91 a selection of papers presented at Internal Program Reviews
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Publication details: IIMI Colombo ; 1992
Availability: Items available for reference: National Science Library & Resource Center: Staff collection (1).

437.
Water management for crop diversification in irrigated rice-based cropping systems state of the art and abstract bibliography Series: Farm resources and systems SOA-AB series ; No.5/1988
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Publication details: IIMI Colombo 1988
Availability: Items available for reference: National Science Library & Resource Center: Staff collection (1).

438.
Irrigation management for crop diversification in Indonesia, The Philippines, and Sri Lanka a systhesis of IIMI's research by Series: IIMI Technical paper ; No.01
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Publication details: IIMI Colombo ; International Irrigation Management Institute Colombo 1989
Availability: Items available for reference: National Science Library & Resource Center: Staff collection (1).

439.
Organizational aspects of irrigation management at Dewahuwa tank during Yala 1986 by Series: IIMI Pub ; 87-18
Language:
Publication details: IIMI Colombo 1987
Availability: Items available for reference: National Science Library & Resource Center: Staff collection (1).

440.
Social aspects of water management during the Maha season 1985/86 in Dewahuwa and Mahaweli H-2 block 305-precept and practice by Series: IIMI Pub ; 86-38
Language:
Publication details: International Water Management Institute Colombo 1986
Availability: Items available for reference: National Science Library & Resource Center: Staff collection (1).

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