वातावरणविज्ञानःएक परिचय
An introduction to environmental science
Gurung, Juddha Bahadur
creator
Kathmandu
Ekata Books
2057 B.S
eng
Nep
116p.
Environment
Environmental pollution
Environmental protection
Pollution
Deforestation
Water pollution
Population
N333.7 J944v
99933-1-903-1
240407