@article{177997, recid = {177997}, author = {Johnson, A. I.}, title = {Geophysical logging of boreholes for hydrologic studies [microform] /}, publisher = {Hydrologic Laboratory,}, address = {Denver :}, pages = {12 p. ;}, year = {1963}, note = {At head of title: United States. Dept. of the Interior. Geological Survey.}, url = {http://library.usi.edu/record/177997}, }