The National Geographic Magazine, Volume 149, Issue 3National Geographic Society., 1976 - Geography |
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Page 287
... collectors in various parts the world will receive the first issues in a m important new collection of international Fi Day Covers . This will be the first collection of First D Covers ever authorized by the internationa respected World ...
... collectors in various parts the world will receive the first issues in a m important new collection of international Fi Day Covers . This will be the first collection of First D Covers ever authorized by the internationa respected World ...
Page 384
... collectors linked together . Another new heat collector , designed by Owens- Illinois , Inc. , uses an array of pipes , each composed of three glass tubes one inside another ( left ) . Water slowly circulates , staying liquid under ...
... collectors linked together . Another new heat collector , designed by Owens- Illinois , Inc. , uses an array of pipes , each composed of three glass tubes one inside another ( left ) . Water slowly circulates , staying liquid under ...
Page 388
... collectors act as miniature green- houses , trapping heat under their glass plates . Because solar radiation is so diffuse , the col- lectors must cover a large area . Air or water in the piping distributes the heat through standard ...
... collectors act as miniature green- houses , trapping heat under their glass plates . Because solar radiation is so diffuse , the col- lectors must cover a large area . Air or water in the piping distributes the heat through standard ...
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American Bartlett beautiful become bell boys Brand buildings built called callosities Canterbury cathedral century changes charges Church coast collection collectors College color cost course cover designed drive electricity Elymians energy engineering face feet female frost future give glass Grades half hand heat Indiana island Italy king land less light live look miles mother mountain NATIONAL GEOGRAPHIC nature nearly Norman offer once Palermo Patagonian Photographs plant produced right whales Roger says School seen serve Sicilian Sicily side society solar solar energy South southern stands stone summer surface things town uplands wall wildlife wind winter wood Write