continentalcontinental air masscontinental climatecontinental heat flowcontinental highcontinous flowcontinuity equationcontinuos change modelcontinuos flow modelcontinuous corncontinuous grazingcontinuous raincontourcontour bandcontour bankcontour basecontour canalcontour cultivationcontour ditchcontour farmingcontour furrow irringationcontour grass stripcontour hedgecontour intervalcontour linecontour mapcontour plantingcontour racecontour ridgecontour stone rowcontour strip croppingcontour strip cropping p fatctorcontour trenchcontour water tablecontracted channelcontracted opening discharge measurementcontracted opening methodcontractioncontrasting soilcontrolcontrol floodcontrol metercontrol of flowcontrol sectioncontrol structurecontrol workscontroled grazingconvectionconvection cellconvection current