000 00323nam a2200097Ia 4500
008 181017s9999 xx 000 0 und d
100 _aWilliam L. Leffler 
245 0 _aOil and Gas Production in Nontechnical Language
260 _c2006
856 _uhttps://ebookcentral.proquest.com/lib/hec-ebooks/detail.action?docID=3385185
999 _c62424
_d62421