TY  - GEN
AU  - Pushplata, Singh
AU  - Singh, A L
TI  - Nitrogen fixation in Indian rice fields : Azolla & Blue green algae
SN  - 81-85031-25-8
U1  - 631.41 SIN 
CY  - India, Agro botanical publishers
KW  - rice fields -India / soil science / soil chemistry
ER  -