Yields on the Exhaustion Land and changes in the NPK ......Yields on the Exhaustion Land and changes...

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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

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