Flowers of the field. Rev. throughout and edited by Clarence Elliott. With an appendix including the Pipe-wort tribe (Eriocauleae) the Sedge tribe (Cyperaceae) and the Grass tribe (Gramineae) Q Science
Fluoride drinking waters; a selection of Public Health Service papers on dental fluorosis and dental caries, physiological effects, analysis and chemistry of fluoride Q Science
The fluorspar industry of the United States with special reference to Illinois-Kentucky district Q Science
Food preservation. A statement of facts in the case, together with references to the authorities Q Science