00520nam a2200157Ia 4500003000600000005001700006008004100023020001800064040002500082082003200107100002300139245007300162260005700235300002700292500004300319NORSU20240502065703.0240215s9999    xx            000 0 und d  a0-697-04825-X  aNORSU-DumcNORSU-Dum  a595.726 H362Second edition  aHelfer, Jacques R. 4aThe Grasshoppers, Cockroaches and Their AlliescBy Jacques R. Helfer  bWm. C. Brown Company Publishersc1972aDubuque, Iowa  avii, 359 pages, 22 cm.  aincludes appendix, index, and glossary