Theory and practice
Subtitle: outlines of instruction in related subjects for the machinist's trade, including general trade subjects for certain other occupations : December, 1919
By: issued by the Federal board for vocational education
Contributors: Allen, Charles R.
Series: Bulletin -- 52. Agricultural series no. 13; Bulletin -- no. 52.
Publisher: Govt. print. off.
Published: 1920
Place of publication: Washington
Language: eng
Number of pages: 127
Subjects: Machinists
Notes: "This bulletin is printed as an advance edition and is not in a complete and final form."

"Prepared by Mr. Charles R. Allen". -p. 6.