000
00255nam a2200109Ia 4500
008
220201s1963 xx 000 0 eng d
100
_a
Marr, GW
245
0
_a
General engg science
260
_b
London : Pergman Press
_c
1963
300
_a
215
942
_2
ddc
999
_c
72296
_d
72296