Measurement of output of research and experimental development :
Freeman, Christopher
Measurement of output of research and experimental development : a review paper / by Christopher Freeman. - París : UNESCO, 1970. - 43 p. : fot. - Statistical reports and studies ; 16 .
OC 31: 5.001.5 (100)=20 FRE No.16.
Measurement of output of research and experimental development : a review paper / by Christopher Freeman. - París : UNESCO, 1970. - 43 p. : fot. - Statistical reports and studies ; 16 .
OC 31: 5.001.5 (100)=20 FRE No.16.