The Science Press Printing Company, 1929. 1st. Hardcover. 12mo. Fair. Item #68232
123pp. Bound in baby blue cloth with shiny gilt paneled and titled front board. Covers are surface worn with scuffing and light foxing across both covers and lightly rubbed titling along the spine. Binding is square and hinges are secure. Text is unmarked on patinated and lightly foxed pages with b/w photographic plates throughout.