Sharma,B L, & Bhardwaj,Palak. (1993). Perspective on agro-ecological problems: A geographical study in environmental impact assessment. Daya Publishing.
Chicago-tyylinen lähdeviittausSharma,B L, ja Bhardwaj,Palak. Perspective on Agro-ecological Problems: A Geographical Study in Environmental Impact Assessment. Delhi: Daya Publishing, 1993.
MLA-viiteSharma,B L, ja Bhardwaj,Palak. Perspective on Agro-ecological Problems: A Geographical Study in Environmental Impact Assessment. Daya Publishing, 1993.
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