Caption: War Publications - WWI Compilation 1923 - Article 45 This is a reduced-resolution page image for fast online browsing.
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O P I T C H — H " t o 1» c o - « STAKE SUPPORT (One a t e a c h c o r n e r ) FIG. 1.—CROSS-SECTION OF A P I T HOTBED r5f / 4-\ ^
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