The plough-up policy and ley farming.
Disc harrow as a plough follow-up appliance
The extent and impact of the 1940 and 1941 “plough-up” campaigns on farming across the South Downs, England
SCHERING-PLOUGHSTEPS UP FOR ORGANON
Plough or pay policy set to force farms to grow up
Gospodarska rasprava s prakti?nim uputama ratarima( An Economic Dissertation with Practical Instructions Dedicated to Ploughmen )
Schering-Plough gears up Saphris launch
Women Get in a Rut to Plough Up the Prizes
The plough-up policy in relation to golf courses.
Machine for grubbing up sugar beet - has plough shares and conveyor leading to bin with tipping base