De Ropp, Robert S. <br/><br/>
Eco-tech :  the whole-earther's guide to the alternate society / 
Robert S. De Ropp. 
 - New York :  Delta,  1975. 
 - 316 p. :  ill. ;  21 cm. +  pbk. 
<br/><br/>Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture--United States<br/>Agriculture--Handbooks, manuals, etc.<br/>Human economics, Rural--Handbooks, manuals, etc.<br/>Collective settlements--United States.
<br/><br/><label>Dewey Class. No.: </label>309