Infant mortality results of a field study in Johnstown, Pa., based on births in one calendar year This book, "Infant mortality results of a field study in Johnstown, Pa., based on births in one calendar year", by Emma Duke, is a replication of a book originally published before 1915. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible. This book was created using print-on-demand technology. Thank you for supporting classic literature.