<1.> A lecture on pollination of flowers, delivered at the State horticultural society. Jan.1892. - <2.> Cross and self-fertilization in plants , a paper read at the meeting of the eastern Iowa horticultural society. Dec.1891. - <3.> The effects of cross-fertilization in plants, read at the meeting of the northern horticultural society. Dec.1891.
L.H. Pammel
Bok Engelsk 1892