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Gerretsen, Johan, 1907- (Personal Name)
LCCN 63-2145: His Lectures on tensor calculus and differential geometry, 1962 (hdg.: Gerretsen, Johan Cornelis Hendrik, 1907- )
LCCN 60-4657: Sansone, G. Lectures on the theory of functions of a complex variable, 1960- (hdg.: Gerretsen, Johan Cornelis Hendrik, 1907- ; usage: Johan Gerretsen)