TY  - BOOK
AU  - Fyrth, H.J. and Goldsmith, Maurice
TI  - Science, history and technology, book 2: Part II : the age of uncertainty the 1880s to the 1940s
U1  - 500 Fyr/Gol vol2,pt2 
PY  - 1969///
CY  - Cassell & company ltd, London
ER  -