00290nam a2200109Ia 4500082001900000100003400019245003500053260002700088300003000115500000500145700003000150  a025.5bG525.PU  aGirja Kumar and Krishan Kumar  aPhilosophy of user educationb  aNew DelhibVikasc1983  axi, 247p. Index, Appendix  a  aKrishan Kumar ; jt. auth.