00350nam a2200133Ia 4500008004100000082001700041100002100058245002400079260003900103300000800142650001800150650002400168653002400192170901s1972    xx            000 0 und d  a595.13bW27E  aWebster, John M. 0aEconomic Nematology  aLondonbAcademic Press, Inc.c1972  a563  aPure Sciences  aZoological sciences  aEconomic nematology