000 00291nam a2200121Ia 4500
008 230118s9999||||xx |||||||||||||| ||und||
020 _a0-387-25481-1
082 _a521
082 _bALE/P
100 _aMARELO S
_bALENCAR ,PHD ,PE
245 0 _aCOMMUNICATION SYSTEM S
260 _bspringer pvt ltd
999 _c716
_d716