Duminy, J.P. (Jacobus Petrus), 1897-1980University of Pretoria. Dept. of Mathematics2010-04-122010-04-121936-06-10http://hdl.handle.net/2263/138707 p. : 24 cmTextAfrikaansUniversity of Pretoria510.1Mathematics -- PhilosophyWiskunde en die filosofieMathematics and philosophyText