| 其他書名 | A Radio Interview Between Mrs. Rowena Schmidt Carpenter, Bureau of Home Economics, and Roy C. Potts, Bureau of Agricultural Economics, Delivered Through WRC and 37 Other Radio Stations Associated with the National Broadcasting Company, Monday, December 15, 1930 |
| 出版 | United States Department of Agriculture, 1930 |
| URL | http://books.google.com.hk/books?id=Hb-K0AEACAAJ&hl=&source=gbs_api |