[ computer program instructional manuals for computer programs for use in database management of air emission data for use in the natural gas, chemical and refining industries ]

'air':14 'chemic':23 'comput':1,6 'data':16 'databas':11 'emiss':15 'gas':22 'industri':26 'instruct':3 'manag':12 'manual':4 'natur':21 'program':2,7 'refin':25 'use':9,18

computer programs for use in database management of air emission data for use in the natural gas, chemical and refining industries

'air':9 'chemic':18 'comput':1 'data':11 'databas':6 'emiss':10 'gas':17 'industri':21 'manag':7 'natur':16 'program':2 'refin':20 'use':4,13

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