How it works : the illustrated encyclopedia of science and technology /
Edited by Donald Clarke...[et al.].
- New york : Marshall Cavendish, c 1978.
- Vols. : ill. ; 28 cm.
V. 20- Welding-Zworykin ;
42 42
0-85685-522-7
Dictionaries & encyclopedias
Science and technology
503 / I6
V. 20- Welding-Zworykin ;
42 42
0-85685-522-7
Dictionaries & encyclopedias
Science and technology
503 / I6