00457nam a2200121Ia 450000500170000010000170001724500630003426000090009752001870010658300190029394200060031299900170031820260716043304.0  aBirol, Fatih  aExamining the importance of methane as a 'greenhouse gas'.  c1991  aAssesses the contribution of methane to global warming. Outlines the main characteristics of methane and indicates the relative significance of methane emissions as a greenhouse gas.  c3/7/00kM2LMGR  cA  c44173d44173