First principles /
Spencer, Herbert.
First principles / by Herbert Spencer. - 5th ed. - New York, N.Y. : A.L. Burt Company, [1880?]. - xv, 483 p.
Contents : The unknowable--The knowable.
Philosophy.
First principles / by Herbert Spencer. - 5th ed. - New York, N.Y. : A.L. Burt Company, [1880?]. - xv, 483 p.
Contents : The unknowable--The knowable.
Philosophy.