%0 Journal Article %T Algebraic topology of $G_2$ manifolds %A Selman Akbulut %A Mustafa Kalafat %J Mathematics %D 2013 %I arXiv %X We discuss various results about the topology of oriented Grassmannian bundles related to the exceptional Lie group G_2, and give some applications to the manifolds with G_2 structure. %U http://arxiv.org/abs/1308.2263v1