TY  - BOOK
AU  - Schmidt,B.F.
TI  - Trigonometrie vir senior sertifikaat en matrikulasie: standerds IX en X 
U1  - 514.02 
PY  - 1955///]
CY  - Kaapstad
PB  - Juta
N1  - Also available in English under title: Trigonometry for senior certificate and matriculation : standards IX and X
ER  -