TY  - GEN
AU  - 
AU  - SINGN,A.L. & Others
TI  - NITROGEN FIXATION IN INDIAN ROCE FIELDS (AZOLLA AND BLUE GREEN ALGAE)
U1  - 631.84/SIN 
PY  - 1989///
CY  - NEW DELHI
PB  - Agro Botanical Publishers
ER  -