Stephenson, Robert
Wastes & resources / Robert Stephenson ; edited by Cherry Mares. — Brighton : Tidy Britain Group, [1992]. — CIDIMA. — 11 p. : il. ; 31 cm + 15 lam. — ( Materials and the environment ; unit 5) ISBN 0-951-6739-6-3 1. Residuos urbanos.2. Educación ambiental. I. Mares, Cherry, ed.. 628.4