| ISBN: | 9780691651941 : |
|---|---|
| 编目源: | MdBmJHUP MdBmJHUP WaSeSS |
| 团体名称: | National Bureau of Economic National Bureau of Economic Research, |
| 题名: | The rate and direction of inventive activity : economic and social factors / National Bureau of Economic National Bureau of Economic Research ; Richard R. Nelson. |
| 索书号: | F113.2/N277E |
| 载体形态: | 1 volume ; 24 cm |
| 一般附注: | Originally published in 1962. |
| 书目附注: | Includes bibliographical references and index. |