/cgi-bin/koha/opac-search.pl?idx=&q=au%3A%22Ehrlich%20P%20R%22&sort_by=title_asc&format=rss 5 0 50 ISBN: /cgi-bin/koha/opac-detail.pl?biblionumber=48171 By Ehrlich P R.
San Francisco W H Freeman 1977 .
xv, 1051p. cm..

]]> Place hold on Ecoscience: Population resources environment

]]> /cgi-bin/koha/opac-detail.pl?biblionumber=48171 ISBN: /cgi-bin/koha/opac-detail.pl?biblionumber=117 By Ehrlich P R.
.
p. cm.

]]> Place hold on Human ecology

]]> /cgi-bin/koha/opac-detail.pl?biblionumber=117 ISBN: /cgi-bin/koha/opac-detail.pl?biblionumber=93688 By Ehrlich P R.
1971 .
p. cm..

]]> Place hold on Man and the ecosphere

]]> /cgi-bin/koha/opac-detail.pl?biblionumber=93688 ISBN: /cgi-bin/koha/opac-detail.pl?biblionumber=89209 By Ehrlich P R.
1974 .
p. cm..

]]> Place hold on Process of evolution

]]> /cgi-bin/koha/opac-detail.pl?biblionumber=89209 ISBN: /cgi-bin/koha/opac-detail.pl?biblionumber=68499 By Ehrlich P R.
New York Macmillan 1987 .
710p. cm..

]]> Place hold on Science of ecology

]]> /cgi-bin/koha/opac-detail.pl?biblionumber=68499