Simple Aids for the High School Chemistry Course - Rush, John J.; Eavey, J. Carter; Wilkinson, P. D. (Periodicals Archive Online (PAO), 1937)
http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:1223-1937-008-00-000019
Keywords: D