Columbia subject headings:
Harvard subject headings:
Agricultural extension workers--Austria--Tyrol--Biography.
Agriculture--Austria--Tyrol--History.
Trientl, Adolf, 1817-1897--Biography.
Princeton subject headings:
Agriculture--Austria--Tyrol--History.
Agriculturists--Austria--Tyrol--Biography.
Farm life--Austria--Tyrol--History.
Fertilizers--Austria--Tryol--History.
Priests--Austria--Tryol--Biography.
Trientl, Adolf, 1817-1897.