00530nam a2200169Ia 450000500170000000800410001702000150005808200170007310000130009024500520010326000480015530000100020369000230021394200070023699900190024395200980026220260205105107.0260111s9999||||xx |||||||||||||| ||und||  a8171413374  a374.4  Si64D  aUK Singh 0aDistance education/by UK Singh and KN Sudarshan  aNew DelhibDiscovery Publishing Housec1996  a329p.  adistance education  cBK  c260077d260077  00104070aMMbMMd2026-02-05l0o374.4  Si64DpMM14539r2026-02-05 10:51:07w2026-02-05yBK