TY  - BOOK
AU  - British standards institution
TI  - British standard bevel gears (machine cut)
U1  - 621.7665 
PY  - 1949///
CY  - London
PB  - British standard institution
KW  - MCE
N1  - 0; 0; 0; 621_766500000000000_BRI; 0; 0; 0; 621_766500000000000_BRI
ER  -