The (solution manual) for Hidráulica de Tuberías y Canales
A detailed 116-page guide for Chapter 4 problems (flow, velocity, and head loss) is available on Slideshare Chapter VIII (Open Channels):
The legend of the "fixed" version was not about a new official edition. It was about anonymous collective action. Some unknown engineer—likely a former teaching assistant from the National University of Engineering (UNI) in Lima or a PhD student in São Paulo—took the corrupted scans and performed three acts of salvation:
El solucionario en PDF fijo es especialmente útil, ya que permite una fácil navegación y búsqueda de soluciones específicas, ahorrando tiempo y esfuerzo en la resolución de problemas.