000
00270nam a2200109Ia 4500
008
220201s1961 xx 000 0 eng d
100
_a
RICH L G
245
0
_a
UNIT OPERATION OF SANITARY ENGINEERING
260
_a
NEW YORK
_b
WILEY PUB
_c
1961
300
_a
308
942
_2
ddc
999
_c
89211
_d
89211