Information bulletin
Subtitle: no.1-no.41; 1927-1928
Published: 1927
Place of publication: Washington, D.C
Language: eng
Table of contents: title: No. 1 (5th ed.), 1927;; title: no. 16 (2d ed.), 1927;; title: no. 17, 1928;; title: no. 21 (2d ed.), 1928;; title: no. 22, 1928;; title: no. 38 (2d ed.), 1928; no. 41, 1928.