Gregory, Alan Frank, 1926- Geological interpretation of aeroradiometric data, by A. F. Gregory. - [Ottawa] Dept. of Mines and Technical Surveys, Canada [1960] - x, 29 p. diagrs., tables. 25 cm. Abstract in English and French. Bibliography: p. 28-29. LCCN: gs 61000034 Subjects--Topical Terms: Radioactive prospecting. LC Class. No.: QE185 / .A43 no. 66 Dewey Class. No.: 622.15