000 00280nam a2200121Ia 4500
001 78306
008 240126s9999||||xx |||||||||||||| ||und||
245 0 _aTetragonal: centre of symmetry, CC-9
260 _aHyderabad
260 _bCreative Educators
260 _c1990
942 _cBK
999 _c78306
_d78306