Principles of environmental conservation /
Singh, H.S.
Principles of environmental conservation / H.S. Singh. - Dehra Dun : international book distributors, c1989 - vi, 273 p. : ill. ; 18 cm
Includes bibliographical references and index.
8170891019
ecosystem
Environmental protection
363.7
Principles of environmental conservation / H.S. Singh. - Dehra Dun : international book distributors, c1989 - vi, 273 p. : ill. ; 18 cm
Includes bibliographical references and index.
8170891019
ecosystem
Environmental protection
363.7