%0 Journal Article %T The problem of materialism’s classifications in the history of Western philosophy %A Kudrin, S.K. %K Marxist approach to the history of philosophy, the classification of materialism, the main question of philosophy, ontological criterion, dialectical and historical materialism, Friedrich Engels. %J Journal of Philosophical Research %D 2019 %N 5 %P 3 %I INFRA-M Academic Publishing LLC.