TY  - BOOK
AU  - Nentwig,J.
AU  - Kreuder,Manfred
AU  - Morgenstern,Karl
TI  - Chemistry made easy part 1: a programed course for self-instruction 
SN  - 3527259317
PY  - 1983///
CY  - Weinheim
PB  - Verlag Chemie
KW  - Chemistry
ER  -