G. Raj

Solid Waste Pollution

P. R. Trivedi, Gurdeep Raj, P. Trivedi, 1997 .

Encyclopaedia of Environmental Sciences

P. Trivedi, G. Raj, 2002 .

Environmental Water and Soil Analysis

P. Trivedi, G. Raj, 2007 .

Environmental Industrial Pollution Control

P. Trivedi, G. Raj, 2007 .