Seminar on Fertilisers in Malaysian Agriculture
Serdang,Malaysia :
44857.; Chew, Poh Soon
40388.; Kho, Boom Lian
44858.; Wan Sulaiman, Wan Haryn
44859.; Zakaria, Zin Z.
42405.
International Symposium on Soil Testing and Plant Analysis
August,1995 :
Wageningen, Netherlands :
43462.; Hood, Teresa M.
43463.; Jones Jr., J. Benton
43464.