A field guide to Rocky Mountain wildflowers : from northern Arizona and New Mexico to British ColumbiaJohn J. John Johnson CraigheadEsaurito4,6Avvisami
Bovids of the world: antelopes, gazelles, cattle, goats, sheep, and relativesJosé Ramón Castelló FortetEsaurito4,5Avvisami
Field Guide to Insects and Spiders & Related Species of North AmericaArthur V. EvansEsaurito4,5Avvisami
