2
Published: Frankfurt/M., Eigenverl. des Inst., 1987
   
3
   
5
Published: Göttingen, Inst. für Agrarökonomie d. Univ., Bibl., 1986
   
10
Published: Hannover, Strothe, 1962
   
13
   
14
   
18
Published: München [u.a.], BLV Verl.-Ges., 1969
   
19
   

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