Concept:
"Small is Beautiful" is a well-known book in the field of economics that emphasizes sustainable development, appropriate technology, and human-centered economic practices.
Step 1: the book.
The book "Small is Beautiful: Economics as if People Mattered" was published in 1973 and focuses on the importance of small-scale, sustainable, and decentralized development.
Step 2: of the book.
The book was written by the economist E. F. Schumacher, who is known for his ideas on sustainable and ethical economics.
Final Answer:
The book "Small is Beautiful" was written by E. F. Schumacher.