000 00341nam a2200133Ia 4500
020 _a159339103X
082 _b440
_a000
245 4 _aThe world around us
260 _bENCYCLOPADIA BRITANNICA,Encyclopedia Britannica, Inc.
_aSingapore
_c2006
300 _a56
944 _cR
999 _c216496
_d216496