References
- Peterson , L.A. and Kruger , A.R. 1980 . Comm. Soil Sci. and Plant Anal. , 11 (10) : 993 – 1004 .
- Murdock , L. 1982 . KY Dept. of Agron, “Soil Sci. News and Views” , 3 (6) : 1 – 2 .
- Bates , T.E. , Hassink , J. , McAlpine , M. , Rowsell , A. and Gagman , E.F. 1983 . 1982 Progress Report for Dept. of Land Resource Sci. and the Inst. of Ped. , 43 – 46 . Ontario , , Canada : U. of Guelph .
- Collins , J.B. , Whiteside , E. P. and Cross , C.E. 1970 . Soil Sci. Soc. Amer. Proc, , 34 : 56 – 61 .
- Vodraska , Robert V. , Dahnke , W.C. , Murdock , Lloyd and Peck , T.R. 1983 . Timing of the Soil Test, Solutions Magazine , 27 (7) : 76 – 84 .
- Mehlich , A. Comprehensive Methods in Soil Testing . Proceedings Soil Testing and Plant Analysis Seminar . Dec. 1 1982 . Athens , GA : Anaheim, CA, Council on Soil Testing and Plant Analysis .
- DeBolt , D.C. 1974 . Comm. Soil Sci. and Plant Anal. , 5 (2) : 131 – 137 .
- Daniel , W.W. and Terrell , J.C. Business Statistics, Basic Concepts and Methodology , 2d , 451 – 62 . Boston : Houghton Mifflin Co. . (Chpt. 13, Sec. 13.3 and 13.4,