TY  - BOOK
AU  - Yepsen,Roger B.
AU  - Albrecht,Sybelle
TI  - Verskerp jou breinkrag: vir maksimum intelligensie, geheue en skeppingsvermo�e 
SN  - 0798123516
U1  - 153  YEP 19
PY  - 1987///
CY  - Kaapstad
PB  - Human & Rousseau
KW  - Intellect
KW  - Self-actualization (Psychology)
KW  - Mental discipline
KW  - fast
ER  -