000 00313nam a2200121Ia 4500
008 211209s1978 xx 000 0 und d
041 _aeng
082 _a621.47 RIC
100 _aRICHARD E P
245 _aTECHNICIANS AND EXPERIMENTOR'S GUIDE TO USING SUN, WIND AND WATER POWER
260 _c1978
300 _a270
999 _c13969
_d13969