Balasim Taha Abdilrzak and Mays Basim Nasih 2023. Solving high order of non-linear Volterra-fredholm Integro-differential equation by using bou-baker Polynomials approximation Method. Journal of Wasit for Science and Medicine. 16, 3 (Sep. 2023), 63–70. DOI:https://doi.org/10.31185/jwsm.478.