Botanische Jahrbücher fur Systematik, Pflanzengeschichte und Pflanzengeographie - Engler, Adolf, 1844 -1930 (Schweizerbart [etc.], 1909)

Botanische Jahrbücher fur Systematik, Pflanzengeschichte und Pflanzengeographie - Engler, Adolf, 1844 -1930 (Schweizerbart [etc.], 1915)

Bothalia - South Africa. Dept. of Agriculture. (Botanical Research Institute, Dept. of Agricultural Technical Services, 1980)

Bothalia - South Africa. Dept. of Agriculture. (Botanical Research Institute, Dept. of Agricultural Technical Services, 2000)

Bothalia - South Africa. Dept. of Agriculture. (Botanical Research Institute, Dept. of Agricultural Technical Services, 2002)

Bothalia - South Africa. Dept. of Agriculture. (Botanical Research Institute, Dept. of Agricultural Technical Services, 2002)

Bothalia - South Africa. Dept. of Agriculture. (Botanical Research Institute, Dept. of Agricultural Technical Services, 2002)

Bothalia - South Africa. Dept. of Agriculture. (Botanical Research Institute, Dept. of Agricultural Technical Services, 2002)

Bothalia - South Africa. Dept. of Agriculture. (Botanical Research Institute, Dept. of Agricultural Technical Services, 2002)

Just's Botanischer Jahresbericht - Just, Johann Leopold, 1841 -1891 (Gebruder Borntraeger, 1915)

The ladies' floral cabinet - Williams, Henry T. (Henry T. Williams, 1885)

Proceedings of the Entomological Society of Washington - Entomological Society of Washington (Entomological Society of Washington, 1970)