Thorp, Robbin W. books & textbook
Bumble Bees of North America: An Identification Guide (Princeton Field Guides)
Williams, Paul H. Thorp, Robbin W. Richardson, Leif L. Colla, Sheila R.
Princeton University Press /2014-03-30 Paperback / 208 Pages
isbn-10: 0691152225 / isbn-13: 9780691152226
California Bees and Blooms: A Guide for Gardeners and Naturalists
Frankie, Gordon Thorp, Robbin W. Coville, Rollin E. Ertter, Barbara
Heyday /2014-10-01 Paperback / 320 Pages
isbn-10: 1597142948 / isbn-13: 9781597142946
Bumble Bees and Cuckoo Bumble Bees of California (Hymenoptera: Apidæ) (Bulletin of the California Insect Survey)
Robbin W. Thorp D. S. Horning Lorry L. Dunning
University of California Press /1983-05-04 Paperback / 79 Pages
isbn-10: 0520096452 / isbn-13: 9780520096455
