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- [4] EFFECT OF TEMPERATURE AND THE PHOTOPERIOD ON GROWTH AND NITROGEN-FIXATION OF AZOLLA SOVIET PLANT PHYSIOLOGY, 1990, 37 (03): : 344 - 348
- [9] INFLUENCE OF RICE CROP CANOPY ON GROWTH AND NITROGEN-FIXATION OF WATER FERN AZOLLA-PINNATA PROCEEDINGS OF THE INDIAN ACADEMY OF SCIENCES-PLANT SCIENCES, 1988, 98 (03): : 209 - 214
- [10] THE IMPORTANCE OF NITROGEN-FIXATION OF BLUE-GREEN-ALGAE AND THE AZOLLA-ANABAENA SYMBIOSIS FOR THE CULTIVATION OF LOWLAND RICE TROPENLANDWIRT, 1986, 87 : 11 - 18