cold wavecoliform bacteriacollapsible soilcollarcollection systemcollinearcollisioncolloidal mattercolloidal suspensincolloidscolluvialcolluvial soilcolluvial stepcolluvium terracecolmatagecolmationcolor velocity gagingcolorado sunken pancolour temperaturecolumnar soil structurecomactness coefficientcombined sewagecommission combat desertificationcommission for agricultural meteorologycommission for atmospheric sciencecommission for climatologycommission for hydrologycommission on climate change and the oceancommulative frequency curvecommulative in flowcompact storagecompactioncompanion cropscompanion matrixcompensated erosioncompensating reservoircompex slopcompilercomplete method of thomascomplete splinecomplex covercomplex surface complex slopcompomentcomposite stormcompostcompound cross sectioncompound hydrographcompound land utilizationcompound sectioncompression
