00457nam a22001457a 4500008004100000040005500041080001800096100002400114245004900138260004100187490003700228650002300265653001000288653001300298221103b        |||||||| |||| 00| 0 eng d  aNational Science LibrarycNational Science Library  a69.028.2 bL7  aHastings, S Robert   aWindow design strategies to conserve energy   bNational Bureau of Standards, c1977  aNBS buildibg science seriesv104  aBuilding materials  aFrame  aGlazing