631.4 Marb : C.F. Marbut memorial slide collection.
631.4 Mars : Soil physics / T.J. Marshall, J.W. Holmes, C.W. Rose.
631.4 Mass : Tools for nutrient and pollutant management : applications to agriculture and environmental quality : proceedings of the 17th Annual Workshop held by the Fertilizer and Lime Research Centre, Massey University, in conjunction with the Biennial Conference of the Australasian Soil and Plant Analysis Council at Massey University, Palmerston North, New Zealand, 2-3 December 2003 / editors, L. D. Curry and J. A. Hanly.
631.4 Mcra : Practical pedology : studying soils in the field / Stuart G. McRae.
631.4 Met : Methods for assessing soil quality / editors, John W. Doran and Alice J. Jones ; editorial committee, Richard P. Dick ... [and others] ; editor-in-chief SSSA, Jerry M. Bigham ; managing editor, David M. Kral ; associate editor, Marian K. Viney.
631.4 Mil : Fundamentals of soil science / H. D. Foth [and] L. M. Turk.
631.4 Mod : Modification of soil structure / edited by W. W. Emerson and R. D. Bond, and A. R. Dexter.
631.4 Mui Mf25 : Root zone limitations to crop production on clay soils : symposium of the Australian Society of Soil Science Inc., Riverina Branch, Griffith, N.S.W., 25-27 September 1984 / editors: W.A. Muirhead, E. Humphreys.
631.4 Muns Mj20 : Munsell soil color charts / Munsell Color Macbeth, a Division of Kollmorgen Corporation.