R Kumar. (1987). Environmental pollution and Health Hazards in India. Ashish publishing house.
Chicago-stil citatR Kumar. Environmental Pollution and Health Hazards in India. Ashish publishing house, 1987.
MLA-referensR Kumar. Environmental Pollution and Health Hazards in India. Ashish publishing house, 1987.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.