na INLIS000000000003772 Jerman 0010-0621000058 System der Landwirthfchaft Ulbrecht Thaer Thaer, Ulbrecht Berlin Wiegandt, hempel & Parey 1877 xiii, 437 p.: ill.; 22 cm. 631.15 THA s 631.15 FARM MANAGEMENT ANALYSIS 58/KA/2021