Trask, Parker D. (Parker Davies) 1899-1961 Geological Society of America Division of Engineering Geology. text series Periodicals. cou Boulder, Colo., etc.] Geological Society of America [1957- 1957 198u continuing eng no. illustrations, maps, profiles. 28 cm Editor: no. 1-<2> P.D. Trask. Ceased publication. Also issued online. No. 1-<2, 10> prepared for the Division of Engineering Geology of the Geological Society of America (name of division varies slightly). Engineering geology Engineering geology TA705 .E55 624.15105 0071-0326 Geological Society of America, 3300 Penrose Place, Boulder, CO 80301 DLC 240904 20250825175116.0 u6120 eng