This journal provides immediate access to some articles. Volume 38(7); July 1952 Biochemistry Antibiotic Substances from Basidiomycetes: IX. Drosophila Subtarata. (Batsch Ex Fr.) Quel. PMCID: PMC1063613 Arginosuccinic Acid from Chlorella PMCID: PMC1063614 Chemistry The Mechanism of Polymerization of Fibrinogen PMCID: PMC1063615 Genetics Pseudo-Wild Types in Neurospora Crassa PMCID: PMC1063616 The Genotype of the Endosperm and Embryo as it Influences Vivipary in Maize PMCID: PMC1063617 Substrate Stabilization of Enzyme-Forming Capacity During the Segregation of a Heterozygote PMCID: PMC1063618 Mathematics An Algebra of Unbounded Operators PMCID: PMC1063619 Commutative Operator Algebras PMCID: PMC1063620 On the Poincaré Polynomial of the full Linear Group PMCID: PMC1063621 On the Poincaré Polynomials of the Classical Groups PMCID: PMC1063622 An Inequality with Alternating Signs PMCID: PMC1063623 Pathology Poliomyelitis and the Weather PMCID: PMC1063624 Corrections Some Problems Involving Primitive Roots in a Finite Field PMCID: PMC1063625 Corrects: Some Problems Involving Primitive Roots in a Finite Field. Proc Natl Acad Sci U S A. 1952 April; 38(4): 314–318. The Number of Solutions of Certain Equations in a Finite Field PMCID: PMC1063626 Corrects: The Number of Solutions of Certain Equations in a Finite Field. Proc Natl Acad Sci U S A. 1952 June; 38(6): 515–519. Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||