The unknown quantity
By: by Gertrude Hall.
Contributors: Henry Holt and Company.
Series: American fiction -- reel 23, no. 206.
Publisher: Henry Holt and Company
Published: 1910
Place of publication: New York
Language: eng
Format: Microform
Number of pages: 300
Notes: Verso of t.p.:  Published February, 1910.

Microfilm. Woodbridge, Conn. : Research Publications, 1992. on 1 microfilm reel ; 35 mm. (American fiction V, 1906-1910 ; reel 23, no. 206).