00322nam a2200133 a 450000500170000002000150001708200160003210000230004810000180007124500210008926000350011030000250014563000180017020251202164157.0  a083597040X  a621.47bHUD  aHudson, Llyod Gary  aMarkell, Jeff  aSolar Technology  aVirginiabReston Pub Co.c1985  aviii,256p, 23cm.bHB  aSolar heating