Crib Sheet Emily Oster - By emily oster (author) 4.6 5,591 ratings. *free* shipping on qualifying offers. From the author of expecting better, an economist's guide to the early years of parenting. Oster’s aim is not to provide answer. Web her new book, cribsheet: Download it once and read it on your kindle device, pc,.
Oster’s aim is not to provide answer. *free* shipping on qualifying offers. By emily oster (author) 4.6 5,591 ratings. From the author of expecting better, an economist's guide to the early years of parenting. Download it once and read it on your kindle device, pc,. Web her new book, cribsheet: