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Volume 13(1 Pt 1);  January 1927
The cover of the journal
Article
Editorial Note
Proc Natl Acad Sci U S A. 1927 January; 13(1 Pt 1): 26.
PMCID: PMC1085287
Chemistry
The Activation of Gases by Adsorption
George B. Kistiakowsky
Proc Natl Acad Sci U S A. 1927 January; 13(1 Pt 1): 1–4.
PMCID: PMC1085279
Genetics
Crossing Over in the Third Linkage Group in Oenothera
George H. Shull
Proc Natl Acad Sci U S A. 1927 January; 13(1 Pt 1): 21–24.
PMCID: PMC1085285
Mathematics
Groups Generated by Two Operators of Order Three Whose Product Is of Order Three
G. A. Miller
Proc Natl Acad Sci U S A. 1927 January; 13(1 Pt 1): 24–26.
PMCID: PMC1085286
Physics
Luminescence Due to Radioactivity
D. H. Kabakjian
Proc Natl Acad Sci U S A. 1927 January; 13(1 Pt 1): 4–7.
PMCID: PMC1085280
Radiation and Absorption on Schrödinger's Theory
J. C. Slater
Proc Natl Acad Sci U S A. 1927 January; 13(1 Pt 1): 7–12.
PMCID: PMC1085281
Psychology
A Fundamental Theorem in Modifiability
Edward L. Thorndike
Proc Natl Acad Sci U S A. 1927 January; 13(1 Pt 1): 15–18.
PMCID: PMC1085283
A Summary of Some of the Results from an Experimental Study of the East Kentucky Mountaineers
N. D. M. Hirsch
Proc Natl Acad Sci U S A. 1927 January; 13(1 Pt 1): 18–21.
PMCID: PMC1085284
Statistics
The Death Rate from Diphtheria in Massachusetts for 51 Years, 1875-1925
Carl R. Doering
Proc Natl Acad Sci U S A. 1927 January; 13(1 Pt 1): 12–14.
PMCID: PMC1085282
Journal Matter
Original table of contents page
Administrative content — journal masthead, notices, indexes, etc.
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