Pushplata, Singh Singh, A L
Nitrogen fixation in Indian rice fields : Azolla & Blue green algae - India, Agro botanical publishers 1989 - 236
81-85031-25-8
rice fields -India / soil science / soil chemistry
631.41 SIN
100
Nitrogen fixation in Indian rice fields : Azolla & Blue green algae - India, Agro botanical publishers 1989 - 236
81-85031-25-8
rice fields -India / soil science / soil chemistry
631.41 SIN
100