00000cam a22000004a 4500 UP-99796217606706937 Buklod 20230503092542.0 m |o d | ta 070925s1992 xx r |||| u|eng d (iLib)UPD-00000416157 DISMED eng QD 40 I57 1992 International Symposium on Empirical Research in Chemistry and Physics (3rd : 1992 : University of Dortmund, Germany) Empirical research in education in chemistry and physics education ; proceedings of International Seminar, June 10-12, 1992. Dortman, Germany ICASE 1992. 195p. Physics Research. Chemistry Research. Book fo UPD DISMED QD 40 I57 1992 Book