Yazar
Robert Wirtz
10 cilt bulundu.
Robert W. Wirtz · Encyclopaedia Britannica
51 sayfa · 1962
Mathematics / Study and teaching (Elementary) / Mathematical recreations
Robert W. Wirtz · Curriculum Development Associates
98 sayfa · 1974
Mathematics / Mathematical recreations / Study and teaching (Elementary)
Robert W. Wirtz · Curriculum Development Associates
Sayfa sayısı yok · 1976
Mathematics / Study and teaching (Elementary)
Robert W. Wirtz · Curriculum Development Associates
240 sayfa · 1974
Mathematics / Study and teaching (Elementary)
Robert W. Wirtz · Wintz-Botel Associates
Sayfa sayısı yok · 1968
Mathematics / Study and teaching (Elementary)
Jochen Wirtz, Robert Johnston, Christopher Khoe Sin Seow · Emerald Publishing Limited
Sayfa sayısı yok · 2009
Kategori yok
Robert W. Wirtz, Morton Botel, Max Beberman, W. W. Sawyer · Encyclopedia Britannica Pres, Inc.
390 sayfa · 1965
Kategori yok