Orr, Dorothy B. books & textbook
Mushrooms and Other Common Fungi of the San Francisco Bay Region (California Natural History Guides)
University of California /1962T Paperback / 71 Pages
isbn-10: 0520009770 / isbn-13: 9780520009776
Mushrooms of Western North America (California Natural History Guides)
Orr, Robert T. Orr, Dorothy B.
University of California Press /1980-04-30 Paperback / 302 Pages
isbn-10: 0520036603 / isbn-13: 9780520036604
