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III.
THE DISCRIMINATION OF PITCH AND ITS
RELATION TO TRAINING
WILLIAM WELLINGTON NORTON
129
SEP 10 41 P
I.
E
9-22-41
VI.
ELECTRICAL TESTING OF TELEPHONE
CABLES
EDWARD BEATTIE STEPHENSON
MERSENNE'S NUMBERS AND THE RECIPRO-
CAL OF FERMAT'S THEOREM
RAYMOND ROYCE HITCHCOCK
..149
..161
VII. A QUANTITATIVE EXPRESSION OF PERIODIC
CLASSIFICATION OF THE ELEMENTS
A SKETCH OF THE EARLY POLITICAL
PARTIES IN THE UNITED STATES
O. G. LIBBY
174
..180
195
..205