000
002890000a22001330004500
245
_a
Shaft design data
100
_a
Mitchell, J.
260
_a
London
_b
BGMA
_c
1970
440
_a
Technical memorandum
440
_a
No.1
080
_a
621.824(083.3)
_b
M5
041
_a
EN
942
_c
BK
999
_c
109505
_d
109505