Librería Samer Atenea
Librería Aciertas (Toledo)
Kálamo Books
Librería Perelló (Valencia)
Librería Elías (Asturias)
Donde los libros
Librería Kolima (Madrid)
Librería Proteo (Málaga)
The origins of lineal measurement remain shrouded in history. Which civilization was the first to create a ruler is uncertain, but the Egyptian, Hebraic, and Mesopotamian civilizations all required, from their very inception, a standardized single measuring system to determine lengths and weights. The standards that were established were kept in the temples and palaces of the time.