PUCPR Search for 'an:91947'

Our living resources a report to the nation on the distribution, abundance, and health of U.S. plants, animals, and ecosystems

Washington, DC U.S. Dept. of the Interior, National Biological Service 1995 .
xi, 530 p. 28 cm..

Earthscape exploring endangered ecosystem

New York Mc Graw Hill 1997 .
1 CD-ROM 4 3/4 in..
0078529514

Habitats and ecosystems an encyclopedia of endangered America /

By Crawford, Mark.
Santa Barbara, Calif. ABC-CLIO 1999 .
xvii, 398 p. , Companion vol. to: Toxic waste sites : an encyclopedia of endagered America / Mark Crawford. Santa Barbara, Calif. : ABC-CLIO, c1997. 26 cm..
0874369975 :

Ecology and conservation of birds of the Salton Sink an endangered ecosystem

Camarillo, Calif. Cooper Ornithological Society 2004 .
viii, 169 p. , Proceedings of a conference sponsored by Western Field Ornithologists and the Cooper Ornithological Society." 26 cm..
1891276379

Reefs at risk in the Caribbean

By Burke, Lauretta Marie..
Washington, DC World Resources Institute 2004 .
80 p. 29 cm..
1569735670

Arrecifes en peligro en el Caribe

By Burke, Lauretta Marie..
Washington World Resources Institute 2004 .
80 p. 29 cm..
1569735840