50 simple things you can do to save the earth / 
the Earth Works Group. 
 - 1st ed. 
 - Berkeley, CA :  Earthworks Press,  c1989. 
 - 96 p ;  21 cm. 
<br/><br/><label>ISBN: </label>0929634063 :  $4.95 
<br/><br/><label>LCCN: </label>91182358 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental protection--Citizen participation.
<br/><br/><label>LC Class. No.: </label>TD171.7  / .A158 1989 
<br/><br/><label>Dewey Class. No.: </label>363.7/0525