  1986 - A Field Guide to Western Butterflies [The Peterson Field Guide Series] (Paperback) ISBN-13: 9780395416549 ISBN-10: 039541654X Genres: Science & Math, Outdoors & Nature 1  1981 - Natural History of the San Francisco Bay Region (Paperback) ISBN-13: 9780520011854 ISBN-10: 0520011856 ?  A Field Guide to Western Butterflies [Peterson Field Guide Series] (Hardcover) ISBN-13: 9780395354070 ISBN-10: 0395354072 Genres: Science & Math, Outdoors & Nature ?  Introduction to the Natural History of Southern California (Hardcover) ISBN-13: 9780520032453 ISBN-10: 0520032454 ? |
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