Search Results       Your search for [author]Singh, R N botanist returned 1 record.           Role of the blue-green algae in nitrogen economy of Indian agriculture. by Singh, R N botanist; New Delhi: Indian Council of Agricultural Research, 1961. Subject: Nitrogen -- Fixation; Soils -- Nitrogen content; Soils -- India; Algae.          Add to Book Cart Relevance: 20.90%