000			00309nam a2200133 a 4500
020			_a9789587058574
008			140409n 000 0 eng d
245	1	0	_aMatemáticas en red 4.
260			_bSM.
500			_aBureche teacher resource library.
005			20220602103424.0
001			25911
003			CB
999			_c27659 _d27659