TY - RPRT TI - A probe for neutron activation analysis in a drill hole using 252Cf, and a Ge(Li) detector cooled by a melting cryogen AU - A. B. Tanner AU - R.M. Moxham AU - F. E. Senftle AU - J.A. Baicker PY - 1972 DO - 10.1016/0029-554x(72)90262-5 UR - https://pubs.usgs.gov/publication/70009763 ID - 70009763 ER -