Electron tubes and semiconductors; production, consumption, trade.

Mode of access: Internet.

Prints and their production; a list of works in the New York public library,

"Reprinted ... from the Bulletin of the New York public library of September 1917."

Poultry, duck, guinea, geese, pigeon and pheasant raising and turkey production and marketing.

Mode of access: Internet.

The McGraw-Hill author's book; details of manuscript preparation and book production,

Mode of access: Internet.

FAO index numbers of food and agricultural production.

Mode of access: Internet.

Medical milk commissions and the production of certified milk in the United States /

"May 5, 1908."

Interregional adjustments in crop and livestock production; a linear programming analysis,

Prepared in cooperation with the Center for Agricultural and Economic Development. Iowa Agriculture and Home Economics Experiment Station, Iowa State University.

Teamwork to save soil and increase production /

A study of soil erosion on the Honey Hollow creek watershed, Bucks County, Pennsylvania.

Teamwork to save soil and increase production /

A study of soil erosion on the Honey Hollow creek watershed, Bucks County, Pennsylvania.

Western ground waters and food production /

"December 1942."

Range and livestock production practices in the Southwest /

Mode of access: Internet.

Wartime shifts in feed and livestock production /

"June 1945."

Steam-electric plant construction cost and annual production expenses.

15th and 16th supplements issued together.

Regulations no. 7 (a revision of internal revenue Regulations no. 28) relative to the production, fortification, tax payment, etc., of wine and the production of grape brandy for fortification.

Mode of access: Internet.

Kinetic model for selective cultivation of microfungi in a microscreen process for food processing wastewater treatment and biomass production

The research was aimed at developing a technology to combine the production of useful microfungi with the treatment of wastewater from food processing. A recycle bioreactor equipped with a micro-screen was developed as a wastewater treatment system on a laboratory scale to contain a Rhizopus culture and maintain its dominance under non-aseptic conditions. Competitive growth of bacteria was observed, but this was minimised by manipulation of the solids retention time and the hydraulic retention time. Removal of about 90% of the waste organic material (as BOD) from the wastewater was achieved simultaneously. Since essentially all fungi are retained behind the 100 mum aperture screen, the solids retention time could be controlled by the rate of harvesting. The hydraulic retention time was employed to control the bacterial growth as the bacteria were washed through the screen at a short HRT. A steady state model was developed to determine these two parameters. This model predicts the effluent quality. Experimental work is still needed to determine the growth characteristics of the selected fungal species under optimum conditions (pH and temperature).