登入選單
返回Google圖書搜尋
Effective Extension Circular Letters
Henry Walter Gilbertson
其他書名
How to Prepare and Use Them
出版U.S. Department of Agriculture, 1941
URLhttp://books.google.com.hk/books?id=za8oAAAAYAAJ&hl=&source=gbs_api
EBookFULL_PUBLIC_DOMAIN
註釋Carefully planned circular letters are a quick, effective, and inexpensive means of reaching special groups of farm people.