Environmental management, Vol.1: Physio-ecological facets
Rai, R K, et al.
Environmental management, Vol.1: Physio-ecological facets - Rawat Publications, New Delhi 1992 - 292
Environmental problems & services; Social problems & services
363.7 RAI-E.1
Environmental management, Vol.1: Physio-ecological facets - Rawat Publications, New Delhi 1992 - 292
Environmental problems & services; Social problems & services
363.7 RAI-E.1