00536nam a2200157Ia 4500 CTU_38546 210402s9999 xx 000 0 und d 631.847 N728 Nitrogen fixation: fundamentals and applications (Current plant Science and biotechnology in agriculture), Vol 43 Dordrecht Kluwer Academic Publishers 1995 biofertilizers,nitrogen - fixing plants Liên, 990423 Trung tâm Học liệu Trường Đại học Cần Thơ