The environmental crisis
Helfrich, Harold W., ed.
The environmental crisis Man's struccle to live with himself Harold W. Helfrich , ed. - 4th print - New Haven, London Yale University Press c1970 - vii, 187p. ; 20 x 13cm
20508
Man--Influence of environment
304.28/H474e
The environmental crisis Man's struccle to live with himself Harold W. Helfrich , ed. - 4th print - New Haven, London Yale University Press c1970 - vii, 187p. ; 20 x 13cm
20508
Man--Influence of environment
304.28/H474e