As for the PDF version, I couldn't find a direct link to download the book. However, I can suggest a few options:
Esta edición se destaca por mantener el rigor académico que ha caracterizado a la serie durante décadas, incorporando mejoras pedagógicas significativas: As for the PDF version, I couldn't find
The "story" behind this book is one of the most successful collaborations in academic history, beginning at Lehigh University in the 1950s. The Origins of a Classic As for the PDF version
The 10th edition covers a comprehensive range of topics essential for an undergraduate engineering curriculum: As for the PDF version, I couldn't find