1. Errors and Variability of Observations... Oscar Kempthorne and R.R. Allmaras 2. Sampling... R.G. Petersen and L.D. Calvin 3. Geostatistical Methods Applied to Soil Science... A.W. Warrick, D.E…
1. Samplingrn Roger G. Petersen and Lyle D. Calvinrn 2. Quality Assurance and Quality Controlrn E. J. Klesta, Jr. and J. K Bartzrn 3. Dissolution for Total Elemental Analysisrn L. R. …