TY  - GEN
AU  - Aspden, H.,
ID  - 3432
KW  - Patents.
KW  - PATENTS : STATISTICS AND ECONOMICS
T1  - Patent statistics as a measure of technological vitality /
TI  - Patent statistics as a measure of technological vitality /
VL  - 1983 Vol 5 No 3 pages 170-173
ER  -