Seymour, John, 1914-2004. Blueprint for a green planet : : your practical guide to restoring the world's environment / [electronic resource] / John Seymour, Herbert Girardet ; illustrated by Ian Penney.. — 1st Prentice Hall ed.. — New York : : Prentice Hall,, 1987.. — 192 p. : : ill. (some col.) ; 25 cm.