Farm planning by computer
Helme, W.H.
Farm planning by computer - London 1979 - 1-139 p. - Farm, Computer Great Britain Ministry of Agriculture, Fisheries and Food. Technical Bulletin No.19 .
Farm planning by computer - London 1979 - 1-139 p. - Farm, Computer Great Britain Ministry of Agriculture, Fisheries and Food. Technical Bulletin No.19 .