Elementary entomology . FIG. 483. Showing method of pinning Coleoptera (After Washburn) mounted on elbow pins, or on bits of fine silver wire ( minutien- nadcln which are stuck through bits of
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Elementary entomology ([c1912]) Elementary entomology elementaryentomo00sand Year: [c1912] FIG. 483. Showing method of pinning Coleoptera (After Washburn) mounted on elbow pins, or on bits of fine silver wire (minutien- nadcln which are
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