Recently me and my friends started undergraduate courses following our interests(mostly engineering, science and maths). can anyone suggest some great books for reference and to use as guides for the respective courses? (like electronics and communication engineering : 1.abcd book 2.some other abcd book .....) The most wanted fields are: electronics and communication engg., electronics and electrical engg., mechanical engg. computer science eng. suggestions for books of other fields are also appreciated. Thanks in advance.