https://www.penguinrandomhouse.com/books/572658/cribsheet-by-emily-oster/9780525559276/
Cribsheet by Emily Oster: 9780525559276 | PenguinRandomHouse.com: Books
The New York Times bestseller From the author of Expecting Better, The Family Firm, and The Unexpected an economist's guide to the early years of parenting....
by emilycribsheetosterpenguinrandomhousebooks