What was the first book to be mass-produced on the printing press?

Nung Shu is considered the world's first mass-produced book. It was exported to Europe and, coincidentally, documented many Chinese inventions that have been traditionally attributed to Europeans.

an informal structure in a bureaucracy would be something like so-called "office politics". where there's a formal structure set up for the organization, but then an informal subculture as well that has a way of organizing the bureaucracy further. this can be positive because it sets up an added degree of organization, albeit informal, within the bureaucracy.

i believe your answer is mountains.