TY  - BOOK
ED  -  West African Examinations Council. 
TI  -  Notes on SI units, signs, symbols and abbreviations for use in schoo l certificate/General Certificate of Education, Ordinary Level and Adva nced Level science and the West African Examinations Council / 
U1  -  389.15 WES 
PY  - 1972///
CY  -  [s.l] : 
PB  -  West African Examinations Council, 
KW  -  Metric system
KW  -  Handbooks, manuals, etc
ER  -