While you mentioned "pdf repack," be aware that original editions are widely available for study:
¿Quieres que lo adapte a un tono comercial (para venta), académico (resumen crítico) o una reseña más breve para redes sociales?
Esta es la pregunta clave. El libro Dibujo Técnico Industrial está protegido por derechos de autor pertenecientes a y al propio Calderón Barquín (o sus herederos).
Searching for a "repack" or specific PDF download of Dibujo Técnico Industrial Francisco Calderón Barquín
: Emphasis on the international "language" of drawing, ensuring that blueprints can be interpreted regardless of the draftsman's native tongue. Digital Availability and "Repacks"
The term "repack" in the digital world usually refers to a file that has been optimized for quality or size. For a classic textbook like Barquín’s, a "PDF Repack" is highly sought after for several reasons:
is widely regarded as a cornerstone manual for engineering students and professional draftsmen in the Spanish-speaking world. First gaining prominence through Editorial Porrúa
Covers everything from basic scales to complex industrial assemblies.