TY  - BOOK
AU  - United NationsEconomic Commission for Europe
TI  - Agricultural mechanization: seed drills 
U1  - 631.3 
PY  - 1963///
CY  - New York
PB  - United Nations
KW  - Drills (Planting machinery)
N1  - United Nations publication. Sales number: 63.II.E/Mim. 19
ER  -