AU  - Thenabadu, M.W.
TI  - Use of fertilizers and manures in Sri Lanka
T2  - Science Education Series
CY  - NARESA
PB  - Colombo
KW  - Education
KW  - Fertilizer
N1  - http://thakshana.nsf.ac.lk/slstic/NA-98/NA _ 98.pdf
ER  -