Encyclopaedia of Environmental Emission Management (5 Vols.)..

Encyclopaedia of Air Pollution Control Technology (3 Vols.)..

Clean Development Mechanism and Emission Trading (2 Vols.)..

Environmental Monitoring and Analysis (2 Vols.)..

Encyclopaedia of Bioethics (2 Vols.)..

A Textbook of Bioremediation (2 Vols.)..

Encyclopaedia of Water: Conservation, Purification & Management (3 Vols.)..

Water Treatment and Purification Technology..

Water Environment and Pollution (2nd Ed)..

Toxicology..

The Spirit of Beautiful Trees..

Systematics and Biodiversity Conservation..

Sustainable Development through Tertiary Level Environmental Studies..

Soil, Plant, Water and Fertilizer Analysis (2nd Ed)..

Soil Microbiology..