00303nam a2200109Ia 4500008004100000082001200041100002300053245006400076250002300140260000900163300002100172190415s9999    xx            000 0 und d  aTR.0196  aReddy, K. Narsimha 0aInter and intra group interactions of students and teachers  aOsmania University  c1980  a397p. + C D - 52