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	21.	No cover image available Man and Environment Language: Publication details: Central Environmental Authority Colombo ; 1995 Availability: Items available for reference: National Science Library & Resource Center: Staff collection (1). Add to cart (remove)
	22.	No cover image available Proceedings of the workshop on conservation of wetlands in Sri Lanka Series: Wetland Conservation project Technical report ; no.3 Language: Publication details: Central Environmental Authority Colombo ; 1993 Availability: Items available for reference: National Science Library & Resource Center: Staff collection (1). Add to cart (remove)
	23.	No cover image available Pollution control guidelines:bakeries Series: Pollution control guidelines No.17 Language: Publication details: Central Environmental Authority Colombo 1997 Availability: Items available for reference: National Science Library & Resource Center: Staff collection (1). Add to cart (remove)
	24.	No cover image available Pollution control guidelines:garage and service stations Series: Pollution control guidelines ; No.12 Language: Publication details: Central Environmental Authority Colombo 1997 Availability: Items available for reference: National Science Library & Resource Center: Staff collection (1). Add to cart (remove)
	25.	No cover image available Pollution control guidelines:saw mills Series: Pollution control guidelines ; No.10 Language: Publication details: Central Environmental Authority Colombo 1997 Availability: Items available for reference: National Science Library & Resource Center: Staff collection (1). Add to cart (remove)
	26.	No cover image available Pollution control guidelines:Metal crushers Series: Pollution control guidelines ; No11 Language: Publication details: Central Environmental Authority Colombo 1997 Availability: Items available for reference: National Science Library & Resource Center: Staff collection (1). Add to cart (remove)
	27.	No cover image available Pollution control guidelines:coir mills Series: Pollution control guidelines ; No.16 Language: Publication details: Central Environmental Authority Colombo 1997 Availability: Items available for reference: National Science Library & Resource Center: Staff collection (1). Add to cart (remove)
	28.	No cover image available Pollution control guidelines:grinding mills Series: Pollution control guidelines ; No.15 Language: Publication details: Central Environmental Authority Colombo 1997 Availability: Items available for reference: National Science Library & Resource Center: Staff collection (1). Add to cart (remove)
	29.	No cover image available Pollution control guidelines: coconut shell burning industries Series: Pollution control guidelines ; No.14 Language: Publication details: Central Environmental Authority Colombo 1997 Availability: Items available for reference: National Science Library & Resource Center: Staff collection (1). Add to cart (remove)
	30.	අං ඇත්තෝ අවි ලද්දෝ (Ang eththo avi laddo) සත්ත්ව ලෝකයෝ අවි - ඒවායේ භාවිතය හා පරිණාමය (sathawa lokaye avi, ewaye bhavithaya ha parinamaya) by Paranagama, D.M Language: Publication details: Colombo S. Godage & Brothers (Pvt) Ltd ; 1999 Availability: Items available for reference: National Science Library & Resource Center: Staff collection (1). Add to cart (remove)

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