Prehistoric man : An introduction to anthropology.

von Duncan, George S.
Boston, Mass. : Stratford, 1931.
Umfang/Format: 143 S. ; 20 cm.

Bibliography of glass: (from the earliest records to 1940)

von Duncan, George Sang, 1880-1948.
[London] : Dawsons of Pall Mall for the Society of Glass Technology, Sheffield, 1960.
Umfang/Format: viii, 544 pages ; 27 cm.