Items Missed in AAR

Cohen, Abraham, b. 1870.

1911. An introduction to the Lie theory of one-parameter groups; with applications to the solution of diffential equations, Boston, New York [etc.] D. C. Heath & co., 1911, vii, 248 p. diagrs. 19 cm. MATH DEPT-THAYER: QA385 .C7. Two copies.