00431nam a2200169Ia 4500003000400000005001700004008004100021020001500062040000700077041000800084082001900092100002400111245005300135260004400188300001500232365001400247OSt20230504155123.0210423s2002    xx            000 0 und d  a1555812414  cAL  aeng  a574.87322 KRAR  aKRASNER (Robert I).  aMicrobial challenge: human microbe interactions.  aWashingtonbButterworth Heinemannc2002  axx,433bHB  b4156cINR