TY  - BOOK
AU  - Vesselo,Isaac R.ed
TI  - The further training of mathematics teachers at Secondary level: report of a meeting of international experts, Hamburg, October 1968. 
PY  - 1969///
CY  - Hamburg
PB  - Unesco Institute for Education
KW  - Mathematics
KW  - Study and teaching (Secondary)
KW  - Congresses
N1  - Includes bibliography; Open access
ER  -