00356nam a2200109Ia 4500008004100000082002200041100008200063245001700145260004500162300001300207650002600220140224s9999    xx            000 0 und d  a628.9.02.001.1 L7  aUnited States. Department of Commerce. National Technical Information Service  aSolar energy  aMarylandbInformatics Incorporatedc1974  aii,473p.  aSolar energy research