| 其他書名 | An Exhibition of Prints and Drawings from the Collection of William H. Helfand, on the Occasion of Canada's Centennial |
| 出版 | American Institute of the History of Pharmacy, 1967 |
| URL | http://books.google.com.hk/books?id=3qVqAAAAMAAJ&hl=&source=gbs_api |