000
00254nam a2200121Ia 4500
008
220201s1961 xx 000 0 eng d
082
_a
526.9
_b
THO
100
_a
W Norman Thomas
245
0
_a
Surveying
260
_c
1961
300
_a
643
942
_2
ddc
999
_c
72763
_d
72763