000 00283nam a2200097 4500
245 _aSchools and mental abilities
_cPonnala Sandeep
100 _aSandeep, Ponnala
260 _aNew Delhi
_bLight & LIfe Publishers
_cc1981
300 _aviii, 205p.: fig.,tables; 21cm.
082 _a371.9
_bSAN
999 _c62031
_d62031