@book{bhlpg55011550, title = {The ants (Hymenoptera, Formicidae) of western Texas }, volume = {no.30-31 (1990)}, url = {https://www.biodiversitylibrary.org/page/55011550}, publisher = {Texas Tech Press}, author = {Francke, Oscar F. }, year = {1990}, pages = {Page 17}, } @book{bhlpg55011470, title = {The ants (Hymenoptera, Formicidae) of western Texas }, volume = {no.30-31 (1990)}, url = {https://www.biodiversitylibrary.org/page/55011470}, publisher = {Texas Tech Press}, author = {Francke, Oscar F. }, year = {1990}, pages = {Page 13}, } @book{bhlpg55011528, title = {The ants (Hymenoptera, Formicidae) of western Texas }, volume = {no.30-31 (1990)}, url = {https://www.biodiversitylibrary.org/page/55011528}, publisher = {Texas Tech Press}, author = {Francke, Oscar F. }, year = {1990}, pages = {Page 71}, }