000 00305nam a2200121Ia 4500
008 190829s9999||||xx |||||||||||||| ||und||
100 _aK Unnikrishnan
245 0 _aResearch Spectrum 1993
250 _a4th Ed.
260 _bCalifornia State Department Of Education
_c1943
300 _a165
942 _cREF
999 _c35414
_d35414