TY  - GEN
AU  - Hatfield,H.Stafford
TI  - Inventions and their uses in science today
U1  - 082 21
PY  - 1940///
CY  - New York
PB  - Penguin Books
KW  - INVENTOS
KW  - ENSAYOS
N1  - Gas and its uses. -- The strange behaviour of metals. -- The air about us. -- Electric developments and small power plants
ER  -