The earth care annual, 1991 / 
edited by Russell Wild. 
 - Emmaus, Pa. :  Rodale Press,  c1991. 
 - xvii, 236 p. :  ill. 
<br/><br/><label>ISBN: </label>0878579125 
<br/><br/><label>LCCN: </label>93012160 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental monitoring.<br/>Environmental protection--Citizen participation.<br/>Conservation of natural resources.<br/>Pollution.<br/>Ecology.<br/>Environmental impact analysis.