Disk harrow;Track laying tractor;Seed bed preparation
Estler, M.
1970

Seed bed preparation;Harrow;Cage wheel;Cage tyres
Estler, M.
1957

Disk harrow;Seed bed preparation
Estler, M.
1957

Rotary cultivator;Seed bed preparation
Estler, M.
1957

Systematische Einteilung der Eggen
Harrow;Seed bed preparation
Estler, M.
1957

Spring tined cultivator;Seed bed preparation
Kromer, K.-H.
1966

Combination harrow;Seed bed preparation
Kromer, K.-H.
1966

Rotary cultivator;Seed bed preparation
Estler, M.
1966

Cultivator-harrow;Seed bed preparation
Kromer, K.-H.
1966

Reciprocating power harrow;Seed bed preparation;Crumble roller
Estler, M.
1970