TY - BOOK AU - Todd, Victoria R. CN - I 19.76: CY - [Menlo Park, CA] : DA - 1995. ID - 219896 KW - Potassium-argon dating. N1 - Cover title. N1 - Imprint from transmittal sheet. PB - U.S. Geological Survey, PP - [Menlo Park, CA] : PY - 1995. T1 - Potassium-argon apparent ages of rocks from the western Okanogan Range, the Methow Basin, and adjacent areas, north-central Washington / TI - Potassium-argon apparent ages of rocks from the western Okanogan Range, the Methow Basin, and adjacent areas, north-central Washington / VL - 95-274 ER -