Chemical education : invited lectures presented at the International Symposium on Chemical Education held at Sao Paulo, Brazil, 30 August - 3 September, 1971. / Symposium editor : J.D. Gomez-Ibanez. - - London : Butterworths, 1972. - 323-370 p. - - (Pure and applied chemistry, vol. 31, no. 3, 1972). .

QD39 / Int