00311nam a2200109Ia 450000500170000000800410001708200200005810000150007824500550009326000440014830000090019220260205044242.0260111s9999||||xx |||||||||||||| ||und||  a371.30782  Y11A  aYadav, D.P 0aAll India Confrence of District Education Officers  aNew DelhibNational Staff Collegec1976  a48p.