00757nam a2200205Ia 4500 CTU_123199 210402s9999 xx 000 0 und d 633.18 R203 Đỗ, Thị Thanh Ren Hiệu quả của phân lân đối với lúa trên đất phèn nặng ( Sulfaquepts) Luận án Phó Tiến sĩ Nông nghiệp Đỗ Thị Thanh Ren Cần Thơ Trường ĐH Cần Thơ 1994 Plant-soil relationships,Plants, effect of fertilizers on,Plants, effect of soil acidity on,Rice Research M.Loan Trung tâm Học liệu Trường Đại học Cần Thơ