| Johnson, William Woolsey, 1841- **F,.5126.85 Differential equations. 4th edition. 1st thousand. — New York. Wiley. 1906. v, (1), 71, (1) pp. Diagrams. [Mathe- matical monographs. No. 9.] 23cm.
 
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L3817 — S.r. — Differential equations.
This .ard was printed at the Boston Public Library, March 25, 1918.