TY  - BOOK
AU  - Matschoss,Conrad
AU  - Hatfield,Henry Stafford
TI  - Great enemies / 
U1  - 620.92 MAT 
PY  - 1939///
CY  - London : 
PB  - G. Bell and sons ltd. , 
KW  - Engineers
KW  - History
KW  - Engineering
N1  -  "Sources" : 369 - 374
ER  -