S.S. Negi. (1983). Environmental conservation- Vol V. Bishen Singh Mahendra Pal Singh.
Chicago Edition CitationS.S. Negi. Environmental Conservation- Vol V. Dehra Dun: Bishen Singh Mahendra Pal Singh, 1983.
MLA Edition CitationS.S. Negi. Environmental Conservation- Vol V. Bishen Singh Mahendra Pal Singh, 1983.
Warning: These citations may not always be 100% accurate.