THENABADU, Mervyn W.
Use of fertilizers and manures in Sri Lanka by Mervyn W.Thenabadu - Colombo National Science Council of Sri Lanka 1980 - 42 p.- - Science education series no.5 .
Fertilizers
630 / THE
Use of fertilizers and manures in Sri Lanka by Mervyn W.Thenabadu - Colombo National Science Council of Sri Lanka 1980 - 42 p.- - Science education series no.5 .
Fertilizers
630 / THE