Allgemeine Pflanzenkaryologie - Tischler, Georg Friedrich Leopold, 1878 - (G. Borntraeger, 1921)

Allgemeine Physiologie. Ein Grundriss der Lehre vom Leben - Verworn, Max, 1863 -1921 (G. Fischer, 1901)

Allgemeine Physiologie; ein Grundriss der Lehre vom Leben - Verworn, Max, 1863 -1921 (G. Fischer, 1909)

Allgemeine Physiologie. Ein Grundriss der Lehre vom Leben - Verworn, Max, 1863 -1921 (G. Fischer, 1897)

Die Alpenflora der österreichischen Alpenländer, Südbaierns und der Schweiz - Dalla Torre, K. W. von (Karl Wilhelm), 1850 -1928 (J. Lindauersche Buchh, 1899)

Alpine flora of the Canadian Rocky Mountains - Brown, Stewardson, 1867 -1921 (G. P. Putnam's sons, 1907)

Alpine flowers for English gardens - Robinson, W. (William), 1838 -1935 (John Murray, 1875)

Alpines, native plants of the National Park Region - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Frank H. Rose, 1944)

The American botanist : a monthly journal for the plant lover - Clute, Willard Nelson, 1869 -1950 (Willard N. Clute & Co, 1907)

The American botanist : a monthly journal for the plant lover - Clute, Willard Nelson, 1869 -1950 (Willard N. Clute & Co, 1910)

The American botanist : a monthly journal for the plant lover - Clute, Willard Nelson, 1869 -1950 (Willard N. Clute & Co, 1919)

The American botanist : a monthly journal for the plant lover - Clute, Willard Nelson, 1869 -1950 (Willard N. Clute & Co, 1922)

American fern journal - American Fern Society. (American Fern Society, 1910)

American fern journal - American Fern Society. (American Fern Society, 1913)

American fern journal - American Fern Society. (American Fern Society, 1914)

American fern journal - American Fern Society. (American Fern Society, 1915)

American fern journal - American Fern Society. (American Fern Society, 1917)

American fern journal - American Fern Society. (American Fern Society, 1919)

American fern journal - American Fern Society. (American Fern Society, 1922)

American fern journal - American Fern Society. (American Fern Society, 1925)

American fern journal - American Fern Society. (American Fern Society, 1928)

American fern journal - American Fern Society. (American Fern Society, 1931)

American fern journal - American Fern Society. (American Fern Society, 1932)

American fern journal - American Fern Society. (American Fern Society, 1933)

American fern journal - American Fern Society. (American Fern Society, 1934)

American fern journal - American Fern Society. (American Fern Society, 1935)

American fern journal - American Fern Society. (American Fern Society, 1936)

American fern journal - American Fern Society. (American Fern Society, 1937)

American fern journal - American Fern Society. (American Fern Society, 1938)

American fern journal - American Fern Society. (American Fern Society, 1939)

American fern journal - American Fern Society. (American Fern Society, 1940)

American fern journal - American Fern Society. (American Fern Society, 1942)

American fern journal - American Fern Society. (American Fern Society, 1943)

American fern journal - American Fern Society. (American Fern Society, 1944)

American fern journal - American Fern Society. (American Fern Society, 1945)

American fern journal - American Fern Society. (American Fern Society, 1946)