000 00726nam a2200241Ia 4500
001 200021639
005 20260309005912.0
008 251210s9999 xx 000 0 und d
082 _aCaja 19-B
110 _aAmerican Petroleum Institute, API
_9105
245 0 _aLiquid ring compressors and vacuum pumps in petroleum, chemical, and gas industry services :
_bAPI standard 681
246 _aStd 681 :
_bAPI 681
250 _a2da. ed.
260 _aWashington :
_bAmerican Petroleum Institute, API,
_c2021.
270 _a13/02/03
300 _a139 p.
650 _aNormalización
_9106
856 _u
_y
942 _cNORMA
999 _c56348
_d56348
650 _aNormas API
_9109
650 _aNormalización
_9106