1. Illustrated hand book of James Leffel's improved double turbine water wheel for 1885 and 1886. For particulars, apply to James Leffel & Co., manufacturers, Springfield, Ohio, and . New York City.
Author: Leffel & Co, J.
Library: Library of Razi Metallurgical Research Center (Tehran)
Subject: ، Turbines.
Classification :
TJ
875
.
L5
1985
2. Psychiatric examination in clinical practice J. P, Leff [and] A. D. Isaacs
Author: Leff
Library: Central Library and Documents Center of Tehran University (Tehran)
Subject: Mental illness - Diagnosis
Classification :
RC
469
.
L4
1984
