Kreomnetvyu:
Spencer, William George. Inventional geometry: a series of problems. With a prefatory note
by Herbert Spencer. New York. Appleton & Co. 1877. 97 pp. [Science primers.] oe 3939-114 Same. 1883. 3939.67
Feb. 15, @ .
F1584 — S.r. — T.r. — Geometry.