Crist, T.O.; MacMahon, J.A. 1992. Harvester ant foraging and shrub-steppe seeds: Interactions of seed resources and seed use. Ecology. 73(5): 1768-1779.

Crist, T.O.; MacMahon, J.A. 1992. Harvester ant foraging and shrub-steppe seeds: Interactions of seed resources and seed use. Ecology. 73(5): 1768-1779.