The rural vision remains the key source of the nation's identity.
"We really view education as being the key source of the divide".
It remains the key source of her legacy as arguably the greatest female athlete of all time.
The Persian Gulf has two-thirds of the world's proven oil reserves and is the key source of oil exports.
Mark Felt, 91, was the key source in the Washington Post investigation that helped to bring down President Richard Nixon.
Television, the key source of information for 80percentt of Russians, according to Levada, invigorates this trend.
Politicians often rail against the complexity of the tax system as the key source of taxpayer frustration.
People under 35 are the key source of new household formation, the factor that supports the housing market.
The key source of CO2 is the burning of fossil fuels such as coal, oil and gas, though deforestation is also a very significant contributor.
He reassesses (and often reprints verbatim) much of the key source material relating to Caravaggio's notoriously turbulent life, and this necessarily makes for a hefty read.
That makes the validity of the company's accounts themselves questionable as the key source of information for shareholders at the AGM to exercise class rights.
