I have owned a copy of this book (2nd edition) since 1989. The book helped me through university (MSc Electrical Engineering) and I find it a very well written and useful book. The topics in the book are well defined and carefully explained. Also, the examples are well thought out and do not contain any (at least to my knowledge) errors.<br> Even now (I run a business designing electronics) I use it on occasions, when I need clarification on issues not directly in my expertise (thermodynamics, fluids etc). The purchase is an investment that will pay itself back in an engineering lifetime. Recommended !