First principles /
Spencer, Herbert, 1820-1903. [from old catalog]
First principles / By H. Spencer. - New York : D. Appleton & Company, 1886. - XX, 602 p. ; 20 cm.
Cont.: Part 1.The unknowable. Part 2.The knowable.
Philosophy--Concepts--England
First principles / By H. Spencer. - New York : D. Appleton & Company, 1886. - XX, 602 p. ; 20 cm.
Cont.: Part 1.The unknowable. Part 2.The knowable.
Philosophy--Concepts--England