Subject heading list.
Subject heading list.
- Prelim. ed.
- Washington [For sale by the Superintendent of Documents, U.S. Govt. Print. Off.] 1963.
- 4 v. (viii, 2434 p.) 28 cm.
Cover title.
agr63000307 //r892
Subject headings--Agriculture.
Z695.1.A4 / U4
Cover title.
agr63000307 //r892
Subject headings--Agriculture.
Z695.1.A4 / U4