On the genus Cypripedium L. with reference to Minnesota species Published: 1895 Total Pages: 27 Get eBook
Bulletin Geological and Natural History Survey of Minnesota Published: 1898 Total Pages: 1350 Get eBook
Reports of the Survey. Botanical Series I-IX. Geological and Natural History Survey of Minnesota Published: 1898 Total Pages: 1296 Get eBook
Reports of the Survey - Geological and Natural History Survey of Minnesota Geological and Natural History Survey of Minnesota Published: 1898 Total Pages: 1334 Get eBook