Columbia subject headings:
Labor laws and legislation--Europe.
Law--Europe.
Lotmar, Philipp, 1850-1922.
Roman law--Study and teaching.
Harvard subject headings:
Labor laws and legislation--Europe
Law--Europe
Lotmar, Philipp, 1850-1922.
Roman law--Study and teaching.
Princeton subject headings:
Labor lawyers--Switzerland--Congresses.
Law--Switzerland--History--Congresses.
Lotmar, Philipp, 1850-1922--Congresses.