For companies in industries like construction and tourism, the illegal workers have been a low-cost source of badly needed labor.

These investments are seen by some as the start of an inevitable flood establishing a low-cost source of supply for the West.

The Library was developed to be a low-cost and portable source of appropriate technology information for aid and relief workers around the world.

The Administration is right to emphasize developing new low-cost foreign sources.

Experts expect oil prices to continue to rise over the next few decades as more low-cost sources are depleted.

A low-cost source of electricity from non-carbon fuels, providing solar, nuclear or geothermal energy, would trim it further.

Federally insured deposits guaranteed a steady low-cost source of funds and fostered savings too.

Those deposits could provide a low-cost source of funds for more lending to foreign consumers to buy cars, appliances and other goods, analysts said.

As for outsourcing, books are often shipped to be scanned by low-cost sources to India or China.

With digital files, there is no used book market, so one low-cost source of textbooks may vanish.