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habe ich mich dazu entschlossen einen besonderen Blick auf die ¿Exiljahre¿ 1933 bis 1945 zu werfen
1Tätigkeitsanalyse15
wie negativen Trends sich feststellen lassen
Die Risiken folgen einer Systematisierung
The Role of Organic Matter in Modern Agriculture Jr habe ich mich dazu entschlossenThe use of organic residues as a means of maintaining and increasing soil fertility is of long standing. This tradition has been somewhat neglected since the introduc tion of mineral fertilizers at low cost. More and more farmers and scientists are now showing renewed interest in the proper and effective use of org~tnic residues, composts and other recycled organic additives. The role and function of organic amendments in modern agricultural systems
