International action - achievements and problems :  proceedings of the third International parliamentary Conference on the Environment = Action internationale-relaisation et promleèmes = International Massnahmen-ihre Durchführung und Problematik / 
rapporteur and editor of the original English text, Stella M. McEwin. 
 - Berlin :  E. Schmidt,  1974. 
 - 207, [270]p. 
<br/><br/><label>ISBN: </label>3503011498 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Human ecology.