Eco-solutions  a casebook for the environmental crisis 

 - Cambridge, Mass. :  Schenkman Pub. Co.,  1972 
 - 540 p. :  ill. ;  25 cm. 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Human ecology--Addresses, essays, lectures<br/>Conservation of natural resources--Addresses, essays, lectures