Roma Agrawal – författare

Nuts and Bolts

Seven Small Inventions That Changed the World in a Big Way

Built

The Hidden Stories Behind Our Structures

Seven Small Inventions that Changed the World

Seven Small Inventions that Changed the World

How to Build a Chocolate Bridge

Extraordinary Builds Using Everyday Things

How to Build a Chocolate Bridge: Extraordinary Builds Using Everyday Things

How Was That Built?

The Stories Behind Awesome Structures

Nuts and Bolts

How Tiny Inventions Make Our World Work

Built: The Hidden Stories Behind Our Structures

Nägel mit Köpfen

Sieben kleine Erfindungen, die die Welt verändert haben