00306nam a2200109Ia 4500008004100000082002500041100002100066245004200087260002600129300001000155650003100165140113s9999    xx            000 0 und d  a631.52:632.931.42 L4  a" Day, Peter R."  aGenetics of host-parasite interaction  b"W. H. Freeman, 1974"  a238p.  aHost-parasite relationship