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• <br />Figure 8 <br />PROJECTILE POI SITS= <br />SCHEMATIC OUTLINE <br />r~ <br />1 <br />• <br />BLADE <br />FORM <br />TRIANGULAR BICONVEX <br />TANG <br />FORM SHARP ROUNDED SHARP ROUNDED <br />LATERAL LATERAL OBLIQUE OBLIQUE <br />STcM <br />FORM <br />NO STE M PARALLEL EXPANDING CONTRAC- <br />TING <br />BASE <br />FORM U <br />FLAT <br />l~l U l.~l <br />CONCAVE CONVEX INDENTED <br />71 <br />