Work materials.
Published: 1936
Place of publication: [Washington]
Language: eng
Number of pages: 87
Notes: Some numbers issued in separate volumes or parts as follows: no. 9 in 3 vol.; no. 31, 69, and 76 each in 2 vol.; no. 35 issued in 6 pt., pt. A-pt. F; no. 38 issued in 2 pts., pt. A-pt. B.

No. 87 un-numbered (The tobacco study, by the Tobacco Unit)