000 00282nam a2200109Ia 4500
008 170707s9999 xx 000 0 und d
050 _a615.14 S468
100 _a"Seltzer, Meta Brown"
245 0 _aDrug calculations: ratio and proportion
260 _c2012
942 _2lcc
_cBK
_kCirc.
999 _c14504
_d14504