1. Complete Bouguer gravity anomaly map of the Joplin 1⁰ x 2⁰ quadrangle, Kansas and Missouri [microform] Yale Public content 1989. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey : [Books and Open-File Reports Section, distributor]. English. Public. Kansas and Missouri.