APA
Helfrich H. W., . (1970). The environmental crisis: man's struggle to live with himself. London: Yale University Press.
Chicago
Helfrich Harold W, . 1970. The environmental crisis: man's struggle to live with himself. London: Yale University Press.
Harvard
Helfrich H. W., . (1970). The environmental crisis: man's struggle to live with himself. London: Yale University Press.
MLA
Helfrich Harold W, . The environmental crisis: man's struggle to live with himself. London: Yale University Press. 1970.
TextPublication details: London Yale University Press 1970Description: ix,171p.illusSubject(s): DDC classification: 
General Collections
