00279nam a2200097Ia 4500008004100000020001800041040002500059082002400084245004900108260002400157240809s9999    xx            000 0 und d  a9781680947403  aNORSU-PamcNORSU-Pam  aP/621.584/Or35/2018 0aOrganic agriculture production: intermediate  b3G E-Learningc2018