00353nam a2200133Ia 4500008004100000082001900041100002200060245002900082260004400111300000800155650001800163650002400181653001400205170901s1952    xx            000 0 und d  a591.5249bC25P  aCaullery, Maurice 0aParasitism and Symbiosis  aLondonbSidgwick and Jackson Ldt.c1952  a340  aPure Sciences  aZoological sciences  aParasites