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| Figure 3. Rectangular area in foreground indicates coverage of vertical photograph of figure 1. Entire trapezoid show coverage of oblique photograph of figure 2. |
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| Cartome FM30-21 Aerial Photography Military Applications, War Department, 22 September 1944 |
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| Figure 3. Rectangular area in foreground indicates coverage of vertical photograph of figure 1. Entire trapezoid show coverage of oblique photograph of figure 2. |
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