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Author/Creator
- SpringerLink (Online service)290
- BBC (Firm)5
- Infobase, film distributor5
- United States. Congress. House4
- Wefer, Gerold4
- Barale, Vittorio3
- Förstner, Ulrich3
- Hoefs, Jochen3
- Kosti︠a︡noĭ, A. G.3
- Salomons, Wim3
- Schlesinger, M. E.3
- Smithsonian Institution. Board of Regents3
- Sündermann, Jürgen3
- Thiede, Jörn3
- Abbot, C.G., (Charles Greeley)2
- Acosta, Juan Jose2
- Anderson, D. L. T. (David L. T.)2
- Ardus, D. A.2
- Ardus, Dennis A.2
- Aubrey, David G.2