Abstract

Get full access to this article
View all access options for this article.
References
1.
Carson
Rachel
Silent spring . Boston : Hough-ton Mifflin , 1962 .
2.
Herber
L.
Our synthetic environment . New York : Knopf , 1962 .
3.
Higbee
E.
The squeeze . New York : Morrow , 1960 .
4.
Osborn
F.
(Ed.) Our crowded planet . Garden City, N. Y. : Doubeday , 1962 .
5.
Vogt
W.
People! Challenge to survival . New York : Sloane Assoc. , 1960 .
