00309nam a2200121Ia 4500008004100000082001500041100002000056245003000076260003300106300001500139600001800154650001500172140224s9999    xx            000 0 und d  a595.132 K1  aThorne, Gerald.  aPrinicples of nematology.  aNew YorkbMc Graw-Hillc1961  axiii,553p.  aGerald thorne  aNematology