Aljoboury, M. A. J. (2018). determination of homogeneity of parent material and the development of soils at selected areas in northern Iraq using weathering resistant minerals. Iraqi National Journal of Earth Science, 18(2), 15-34.
Al-Juraysi, S. M. F. (2021). Variability of chemical weathering indices applied to desert soils formed on calcareous parent materials of western Anbar. International Journal of Agricultural and Statistical Sciences. 17(1) 321-327.
Al-Juraysi, S. M & Mhede I. R. (2021). Proposing A table for weighing the characteristics of stratified samples instead of mathematical equations to study soil characteristics Statistically. IOP Conference Series: Earth and Environmental Science, 761.
Al-Khafagi, Q. D., Al-Dulaimi, A. A., Esmael, A. S., & Farhan, M. J. (2016). Soil content of some oxides as a function of the development in ninavah governorate/ North Iraq. Tikrit Journal of Pure Science. 21(5), 139-147.
Black, G. R. (1965). Bulk density. In Black, C. A. et al. (eds.) Methods of soil analysis, Agron. Mono. No. 9: 374-390. American Society of Agronomy.Madison, W I. USA
Bouyoucos, G. J. (1962). Hydrometer method ımproved for making particle size analyses of soils. Agronomy Journal, 54 (5), 419-434.
Campbell, J. B. (1979). Spatial variability of Soils. Annals of the Association of American Geographers. 69(4), 544–556.
Demiralay, I. (1993). Methods of soil physical analyses. Agricultural Faculty, Ataturk University, Erzurum,Turkey.
Dengiz, O., & Usul, M. (2018). Multi-criteria approach with linear combination technique and analytical hierarchy process in land evaluation studies. Eurasian Journal of Soil Science, 7(1), 20-29.
Gülser, C., Imanverdi, E., Feride, C. & Zeynep, D. (2016). Spatial variability of soil physical properties in a cultivated field. Eurasian Journal of Soil Science, 5 (3), 192 – 200.
Hulugalle, N. R., de Bruyn, L. A. L., & Entwistle, P. (1997). Residual effects of tillage and crop rotation on soil properties, soil invertebrate numbers and nutrient uptake in an irrigated Vertisol sown to cotton. Applied Soil Ecology, 7: 11-30.
Kibar, M., Deniz, K., & Sarıoglu, F. (2012). The morphology, mineralogy, geochemistry and physical implications of foid bearing syenite and syenite-carbonate rocks contact zone soils: Kırşehir-Akpınar-Buzlukdag, Turkey. Eurasian Journal of Soil Science, 1(2), 69–74.
Mzuku, M., Khosla, R., Reich, R., Inman, D., Smith, F., & MacDonald, L. (2005). Spatial variability of measured soil properties across site-specific management zones. Soil Science Society of America Journal, 69,( 5),1572–1579.
Ogunkunle, A. O. (1993). Variation of some soil properties along two toposequence on quartzite schist and banded gneiss in South-western Nigeria. Geo Journal, 30(4), 399-402.
Shan, H. M., Liang, H. C., Peng, S. X., Longe, A. A., & Zhou, A. G. .(2010). Effects of water-saturation and water-loss processes on composition and structure variations of landslide, Three Gorges reservoir, China. In: Water- Rock Interaction. Birkle, P., Torres- Alvarado, I. S. (Eds.). CRC Press, New York, USA.
Soil Survey Laboratory (2004). Soil Survey Laboratory Methods Manual. USDA Natural Resources Conservation Service. Soil Survey Investigations Report No 42. Washington D.C., USA.
Soil Survey Staff. (2014). Keys to soil taxonomy, 12th ed. USDA-Natural Resources Conservation Service, Washington, DC.
Webster, R. (2000). Is soil variation random? Geoderma. Volume 97, Issues 3–4, Pages 149-163.
Webster, R. (2021). Statistical inferential testing. In: Daya Sagar B., Cheng Q., McKinley J., Agterberg F. (eds) Encyclopedia of Mathematical Geosciences. Encyclopedia of Earth Sciences Series. Springer, Cham.
)
