TY  - BOOK
AU  - Clark,John O.E.
TI  - Timeless of science and technology (6) : the age of steam 1840-1884
T2  - Timeless of science and technology
SN  - 1840442034
U1  - 509 23
PY  - 2006///
CY  - London : 
PB  - Brown Reference Group , 
KW  - Discoveries in science
N1  - Vol. 6
ER  -