Teaching school chemistry /
edited by D.J. Waddington.
- Paris : Unesco, 1984.
- 392 p. : ill. ; 21 cm.
9231021311 (pbk.)
Chemistry x Study and teaching.
QD40 / .T43 1984
540/.7�19
9231021311 (pbk.)
Chemistry x Study and teaching.
QD40 / .T43 1984
540/.7�19