Indus Valley [Text] : green lessons from the past / B. Sen ; illustr. and direction Y. Kumar... – Delhi : TERI Press, 2014. - 29 p., ill.;– (Smart Green Civilizations. / ed. A. Ahmad . . – ISBN 978-81-7993-328-2, ISBN 978-81-7993-421-0 (set of 7 titles) (hardcover) : 0 tg.