Necessity

From Author Wars - https://authorwars.com/publications/necessity-580992.html

Overview:

Title: Necessity
Author: Jo Walton
Year: 2016
ISBN-10: 9781466865709
Publisher: Tor
Price: $12.99
Pages:
Binding: ebook
Type: Novel
Title Reference: Necessity
Notes: Amazon Kindle's page count 335. Data from Amazon.com as of 2016-08-03.