R & D and productivity : the econometric evidence
Zvi Griliches种类:
年:
1998
出版社:
University of Chicago Press
语言:
english
ISBN 10:
0226308863
ISBN 13:
9780226308869
系列:
A National Bureau of Economic Research monograph
文件:
PDF, 32.33 MB
IPFS:
,
english, 1998