Helfrich, Harold W, ed. <br/><br/>
Agenda for survival  the environmental crisis- 2 

 - London  Yale university press  1971 
 - xi, 234 p.; 22cm. 
<br/><br/><label>ISBN: </label>300014325 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental crisis<br/>Environmental economics<br/>Human survival skills<br/>Survival skins