Voskuil, Walter Henry 1892- The Market for Illinois Oil in 1937 and 1938; Report of Investigations No. 54

1892-1938, Storni Alfonsina Poesías, Seleccionadas, E Inéditas

Voskuil, Walter Henry 1892- Illinois Mineral Industry in 1938: a Preliminary Statistical Summary and Economic Review; Report of Investigations No. 56