References to current radio literature

This is a list of references prepared by the US Bureau of Standards for the months of January to April, 1928, inclusive. It is intended to cover the more important papers of interest to professional radio engineers which have recently appeared in periodicals, books, etc. The number at the left of each reference classifies the reference by subject, in accordance with the scheme presented in "A Decimal Classification of Radio Subjects-An Extension of the Dewey System," US Bureau of Standards Circular No. 138, a copy of which may be obtained from the Superintendent of Documents, Government Printing Office, Washington, DC. The articles listed here are not obtainable from the US Government.