00324nam a2200133Ia 45000030006000000080041000060400015000471000031000622450049000932500010001422600009001525460012001610050017001730STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aIowa state unversity; Iowa  aProceedings the world food confrence of 1976  aFirst  c1977  aEnglish20220125165516.0