00504nam a2200205Ia 4500 150909s9999 xx 000 0 und d English 630 JAI/NI Jaikumaran U Sreedharan C Researcher Nitrogen economy through incorporation of azolla in rice. M.Sc Trivandrum College of Agriculture 1981 Agronomy TH 198745 198745 0 0 0 0 KAUCOA KAUCOA 2022-02-28 0 630 JAI/NI KAU_COA-T-364 2015-09-16 00:00:00 2015-09-16 TH