| 其他書名 | Describing the Sixty-nine Projects which Constitute the Activities and Services of the National Electrical Manufacturers Association for 1941, as Approved and Adopted by the Membership |
| 出版 | National Electrical Manufacturers Association, 1940 |
| URL | http://books.google.com.hk/books?id=rIEmuAAACAAJ&hl=&source=gbs_api |