Contributions to the study of coal; Banded ingredients of no. 6 coal and their heating values as related to washability characteristics and preliminary report on unit coal-specific gravity curves of Illinois coals Q Science
Contributions to the study of coal. Influence of structural irregularities upon the chemical character of no. 6 coal in Franklin and Williamson Counties, Illinois Q Science
A contribution to the Guianan flora : Dalechampia, Haematostemon, Omphalea, Pera, Plukenetia, and Tragia (Euphorbiaceae) with notes on subfamily Acalyphoideae Q Science
