“Using Some of Hierarchical Approach of Cluster Analysis for Classification of Agricultural Lands by Area and the Amount of Production for Some Agricultural Crops in the Iraqi Governorates for the Years (2005) and (2010)”. Journal of Al-Rafidain University College For Sciences ( Print ISSN: 1681-6870 ,Online ISSN: 2790-2293 ), vol. 44, no. 1, Oct. 2021, pp. 52-74, https://doi.org/10.55562/jrucs.v44i1.128.