TY - BOOK AU - Lahr, John C. CN - I 19.76: CY - [Denver, CO] : DA - [1999]. ET - Paper ed. ID - 227852 KW - Earthquakes LK - http://purl.access.gpo.gov/GPO/LPS2141 N1 - "1999 Version 1.0." N1 - Imprint from transmittal sheet. N1 - Shipping list no.: 2000-0290-M. PB - U.S. Dept. of the Interior, U.S. Geological Survey, PP - [Denver, CO] : PY - [1999]. T1 - HYPOELLIPSEa computer program for determining local earthquake hypocentral parameters, magnitude, and first-motion pattern, Y2K compliant version / TI - HYPOELLIPSEa computer program for determining local earthquake hypocentral parameters, magnitude, and first-motion pattern, Y2K compliant version / UR - http://purl.access.gpo.gov/GPO/LPS2141 ER -