Questions and answers on the United States public land laws and procedureJoseph R. Rohrer · First published 1912Open the Tome
Common Mushrooms of the MidwestKirsten McKnight Ward, R Rohrer Joseph, B McKnight Karl · First published 2021Open the Tome
Peterson Field Guide to Mushrooms of North America, Second EditionKarl B. McKnight, Joseph R. Rohrer, Kirsten McKnight Ward, Kent H. McKnight · First published 2021Open the Tome
Common Mosses of the Northeast and AppalachiansKarl B. McKnight, Warren J. Perdrizet, Joseph R. Rohrer, Kirsten McKnight Ward · First published 2013Open the Tome
Versuch über die deutschen Bewohner der österreichischen MonarchieJoseph R Rohrer · First published 1804Open the Tome
