CONSERVATION IN PROGRESS 

 - NEW YORK  1993 
<br/><br/><label>ISBN: </label>0-741-93641-3 
<br/><br/><label>LC Class. No.: </label>333.78/CON  / 2 
<br/><br/><label>Dewey Class. No.: </label>333.78/CON  / 2