000 00244nam a2200109Ia 4500
082 _a510.2468 SCI
100 _aSCI TECH STAFF
245 _aPRACTICAL MATH ENVIORNMENT ENGINEERING
260 _bSCI TECH
_c1990
300 _a136
942 _2ddc
_cB
999 _c60228
_d60228