00316nam a2200097Ia 4500008004100000082002000041100003300061245007000094260004600164300000800210140113s9999    xx            000 0 und d  a330.19:5/6   K9  aNational Academy of Sciences  aImpact of science and technology on regional economic development  a1969bNational Academy of SciencecU.S.A.  a112