William Ruschenberger (1807-1895)
Elements of MammalogyWilliam Ruschenberger
Elements of Herpetology and IchthyologyWilliam Ruschenberger
Elements of ConchologyWilliam Ruschenberger
Elements of BotanyWilliam Ruschenberger
Elements of GeologyWilliam Ruschenberger
Elements of OrnithologyWilliam Ruschenberger
Elements of Anatomy and PhysiologyWilliam Ruschenberger
Elements of EntomologyWilliam Ruschenberger