SS Negi. (1992). A textbook of forest utilization. Bishen Singh Mahendra Pal singh.
Čikaški stil citiranjaSS Negi. A Textbook of Forest Utilization. Dehra Dun: Bishen Singh Mahendra Pal singh, 1992.
MLA način citiranjaSS Negi. A Textbook of Forest Utilization. Bishen Singh Mahendra Pal singh, 1992.
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