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Google圖書搜尋
Unified Stenography
Norman Peter Heffley
其他書名
The Simplest and Most Uniform of Any of the Pitmanic Systems; Prepared for the Exclusive Use of the Heffley Institute
出版
1917
URL
http://books.google.com.hk/books?id=7jcuAAAAYAAJ&hl=&source=gbs_api