Olckers, P. J.
Arithmetic for everybody std. V (Cape syllabus) : suggestions and answers / Arithmetic for everybody std. 5 (Cape syllabus) : answers and teachers' guide P.J. Olckers, J.J. Katzke and S. Theron. - 2nd ed. - Cape Town : Nasionale boekhandel, 1961. - 46 pages ; 19 cm
Arithmetic for everybody std. V (Cape syllabus) : suggestions and answers / Arithmetic for everybody std. 5 (Cape syllabus) : answers and teachers' guide P.J. Olckers, J.J. Katzke and S. Theron. - 2nd ed. - Cape Town : Nasionale boekhandel, 1961. - 46 pages ; 19 cm