How to Build Greenhouses

How to Build Greenhouses

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The cover of a 6 X 8-foot, even-span greenhouse would weigh 370 pounds, if the glass were double-strength. A single-strength glass cover would weigh 275 pounds. The cover would weigh only 74 pounds if it were rigid plastic. And it wouldanbsp;...

Title:How to Build Greenhouses
Author:Thomas H. Jones
Publisher:HarperCollins Publishers - 1978-01-01


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