00266nam a2200109Ia 450000500170000000800410001708200120005810000190007024500240008926000350011330000080014820260224040844.0260224s9999||||xx |||||||||||||| ||und||  a632 WEB  aWebster, J.M.  0aEconomic nematology  aNew York: Academic Pressc1972  a563