What has the author Josef Rudolf Leo Schwanzara written?

Rudolf Mathias Schuster has written:

'The Hepaticae of South Greenland' -- subject(s): Liverworts

'The Hepaticae of the east coast of Hudson Bay' -- subject(s): Liverworts

'The Hepaticae and Anthocerotae of North America east of the hundredth meridian' -- subject(s): Liverworts