New trends in physics teaching.
- Paris : Unesco, c 1972.
- Vols. ; 27 cm.
- The teaching of basic sciences. .
V. 2-1970 ;
346 346
Teaching.
Physics -- Study and teaching.
530.7 / U3n
V. 2-1970 ;
346 346
Teaching.
Physics -- Study and teaching.
530.7 / U3n