Department of the the Commerce: Bulletin 303 Tests of Strength of Roof Supports Used in the Anthracite Mines of Pennsylvania (1929)

$9.99

Department of the the Commerce: Bulletin 303 Tests of Strength of Roof Supports Used in the Anthracite Mines of Pennsylvania (1929)

Fair condition, thin, green softcover.  The cover has discoloration, some scratches. Some pages have wrinkling. Text and illustrations throughout are clean, clear, and legible.

V111 89D VR20

1 in stock

SKU: V111 89D VR20 Category: Tag:

Description

Department of the the Commerce: Bulletin 303 Tests of Strength of Roof Supports Used in the Anthracite Mines of Pennsylvania (1929)

Fair condition, thin, green softcover.  The cover has discoloration, some scratches. Some pages have wrinkling. Text and illustrations throughout are clean, clear, and legible.

V111 89D VR20

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