| 其他書名 | A Memorandum Prepared at the Request of the Business Committee of the National Planning Association, by Beardsley Ruml and H. Chr. Sonne. [Foreword, by E.J. Coil, Theodore W. Schultz, Clinton S. Golden.]. |
| 出版 | National planning Association, 1944 |
| URL | http://books.google.com.hk/books?id=NOd5QwAACAAJ&hl=&source=gbs_api |