A biological survey of the sand dune region on the south shore of Saginaw Bay, Michigan This book, "A biological survey of the sand dune region on the south shore of Saginaw Bay, Michigan", by Michigan Geological Survey, is a replication of a book originally published before 1911. 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.