Title Dr. Grant's system of railing spiral stairs, this hitherto unsolved problem solved : the solution is exceedingly simple; a few remarks on the tangent system are added

Published [Chicago, Ill.] : [Printed by the Columbia press], [1911] [©1911]

Copies

Location	Call no.	Vol.	Availability
ADPML SPC	694.6 Gra/Dgs		LIB USE ONLY

Description 38 pages : plates, diagrams ; 25 cm Subject Hand-railing. LC no. 11030407

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