TY - BOOK AU - Singh, R.N. TI - Role of blue-green algae nitrogen economy of Indian agriculture U1 - 579.39 21st ed. PY - 1961/// CY - New Delhi PB - Indian Council of Agricultural Research KW - Algae KW - Bacteria KW - Cyanobacteria KW - Nitrogen fixation KW - Nitrogen fixing bacteria KW - Prokaryotes N1 - Index: pp 167-75 ER -