Environmental studies /
Purkayastha, G.
Environmental studies / Gautam Purkayastha - 4th rev. ed. - New Delhi : Kalyani Publishers, 2019. - 373 p. : ill. ; 26 cm.
Includes bibliographical references and indexes.
9789388778398
Environmental studies
352.6 / PUR
Environmental studies / Gautam Purkayastha - 4th rev. ed. - New Delhi : Kalyani Publishers, 2019. - 373 p. : ill. ; 26 cm.
Includes bibliographical references and indexes.
9789388778398
Environmental studies
352.6 / PUR