TY  - BOOK
TI  - How things work: the theory and practice of modern machines and methods, from the ball-point pen to the jet engine, from the polaroid camera to radea, with 1071 two-colour drawings and 6 pages of four-colour illustrations
U1  - 600 22
PY  - 1967///].
CY  - [London]: 
PB  - Heron, 
KW  - Technology
N1  - Original title: Wie funktioniert das ?; Includes index
ER  -