TY - BOOK AU - Cook,Gerhard A. TI - Argon, helium and rare gases: the elements of the helium group PY - 1961/// CY - New York PB - Interscience Publishers KW - Gases, Rare KW - Argon KW - Helium N1 - v.1. History, occurrence, and properties. v.II. Production, analytical determination, and uses; Includes bibliography ER -