00337nam a2200109Ia 4500008004100000082001900041100001300060245003900073260002800112630001800140650006900158211109s9999||||xx |||||||||||||| ||und|| a333.794bRAI-N aRai, G D 0aNon-Conventional Sources of Energy bKhannaaNew Delhic2000 xGeneral stack aSolar energyvWind powerxForce and energyPower resourcesPhysics