Divine 9 Fitness Project : Challenge YourselfVivian Schad, Barbara Schaefer · First published 2012Open the Tome
Divine 9 : A Woman's Fitness Devotional from IOU FitnessVivian Schad, Barbara Schaefer · First published 2011Open the Tome
Tessin. DuMont Extra. Extra-aktuell. 5 Extra- TourenBarbara. Schaefer · First published 2003Open the Tome
Using the mathematical literatureBarbara Kirsch Schaefer · First published 1978 · Latest edition 1979Open the Tome
Classification of the literature of mathematicsBarbara Kirsch Schaefer · First published 1972Open the Tome
