TY  - RPRT
T1  - Fundamentals or Population Dynamics and the Geographic Distribution of U.S. Biotechnology Enterprises, 1976-1989
AU  - Zucker, Lynne G.
AU  - Darby, Michael R.
AU  - Peng, Yusheng
PY  - 1998
T2  - NBER Working Paper Series
IS  - 6414
CY  - Cambridge, MA
UR  - http://papers.nber.org/papers/w6414.pdf
PB  - National Bureau of Economic Research
ER  -