Duncan, J. (John), d. 1941 · London, MacMillan and co., limited · leaf 712
B Member Force irxMember. Ib. Push Pull Reaction A B 225 — EA 610 — BF 740 — . DH 540 — AF — • 670 AG — 545 AH — 670 FG — 160 GH — 160 … FIG. 720. 400 I b.
Mechanics
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