yields on the exhaustion land and changes in the npk ......yields on the exhaustion land and changes...
TRANSCRIPT
Yields on the Exhaustion Land and changesin the NPK content of the soils due tocropping and manuring, 1852-1975A. E. Johnston and P. R. PoultonFrom: Rothamsted Experimental Station Report for 1976 Part 2
Yields On The Exhaustion Land And Changes In The Npk Content Of The Soils Due To Cropping And Manuring, 1852-1975 ,A. E. Johnston and P. R. Poulton (1977) Rothamsted Experimental Station Report For 1976 Part 2 pp 53 - 85
Lawes Agricultural TrustHarpenden, HertsUnited Kingdom
http://www.rothamsted.ac.uk/
1