Hello, I'm planning to spend my summer studying some physics and maths books. Physics books aren't my problem, math books are. I took " calculus 1/2 & differential equations " till now and a material of mathematical methods (vector analysis/general coordinates/complex/gamma-beta functions/ differential equations). I was thinking about one of two books: 1- Mathematical methods in the physical sciences By: Mary Boas (We used it for mathematical methods). 2- Mathematics: Its content, methods and meaning By: A. D. Aleksandrov , A. N. Kolmogorov ,M. A. Lavrentev. They say they are both good, but I'm really hesitated between the two and between other good books.