000 00287nam a2200121Ia 4500
008 190829s9999||||xx |||||||||||||| ||und||
020 _a852261705
100 _aDey, Aloke
245 0 _aTheory of Block Designs
260 _bWiley
_aNew Delhi
_c1986
650 _aBlock Designs
942 _cBK
999 _c2154
_d2154