00274nam a2200109Ia 450000500170000008000180001710000210003524500400005626000390009630000100013558300190014520260716043015.0  a08.11.06 J545  aJensen, James T.  aWorld gas reserves and availability  bJensen AssociatesaHamburgDEc1986  a20 p.  c3/7/00kM2LMGR