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edited by Thaddeus C. Trzyna, Jennifer Trzyna Caughman, Roberta Childers
California Institute of Public Affairs c1993 5th ed California information guides series
Available at 1 libraries
edited by Thaddeus C. Trzyna and Roberta Childers
California Institute of Public Affairs in cooperation with the Sierra Club and IUCN-The World Conservation Union c1992 4th ed Who's doing what series 2
Available at 14 libraries