00322nam a2200097Ia 4500008004100000082001600041100000800057245013100065260002000196300000800216140113s9999    xx            000 0 und d  a595.13   L1  aFAO  aIntroduction to Research on Plant Nematology : An FAO guide to the study of control plant parasitic Nematodes. Revised edition  a1971bFAOcRome  a133