32 problems in world history : source readings and interpretations
Fenton, Edwin, Aberg, Sherrill..
32 problems in world history : source readings and interpretations /
critic reader : D. Powell ; designer : T.J. Gorman ; globe model : G. Sawa ; globe puzzle : T.J. Buehler
. - Glenview : Scott, Foresman & Co., 1969
. - 240 p. 23 cm.