000 00307nam a2200157Ia 4500
082 _aSA.7
_bR215
100 _aRao, M. B.
245 _aOn balanced designs
_b
260 _aCalcutta
_bISI
_c1969
300 _a12p.
500 _a
690 _a
700 _a
964 _a
_b
_c
_d
_e
_f
_g
921 _a17181
999 _c17181
_d17181