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1934/09/15: E. L. Kammerer to Arboretum des Barres at Fruticetum VilmorinianumSeptember 5 1934
Kammerer, E. Lowell
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1930/01/06: E. L. Kammerer to the Director of the Barres School of ForestryJanuary 6 1930
Kammerer, E. Lowell
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1930/01/06: E. L. Kammerer to the Director at Barres School of ForestryJanuary 6 1930
Kammerer, E. Lowell
Document
1930/03/21: E. L. Kammerer to the Director of the Barres School of ForestryMarch 21 1930
Kammerer, E. Lowell