No single source, including this one, will identify all possible options.
This made me realize that there is no single source of Chinese culture, but that Chinese culture is a composite of diverse ethnic and regional cultures.
Though there is no single source, visitors starting with sfstation.com/literary-arts, sfheart.com or Mr. Karp's litseen.com will find themselves in the thick of things before long.
"There is no single source of data on political appointees serving in the executive branch that is publicly available, comprehensive, and timely," the Government Accountability Office says.
Lambertville has no single source of income to compare with it and local observers doubt that its aggregate in come in the year runs that high.
There are no parties and no single source of authority: the president shares power with the "supreme leader", Ayatollah Ali Khamenei.
Take note: Spotify streams songs that have been serviced to the company, and many big singles are not yet on iTunes, so there is no single source for the zeitgeist.
The imperfections are mainly because there is no single source of reliable live traffic information, so the services have to collect traffic data, of varying accuracy, from a range of sources.
It's treated in many different places — hospitals, emergency rooms, and clinicians' offices, as well as non-medical settings — and health authorities don't keep track of cases, so there's no single source of data on it.
There was thus no single source (and none at all in the United States) to which customs officials could look to determine the extent to which foreign currency had depreciated.
There is no single source for the measurement of pollution levels at the moment, but the seas in the north, around Iceland and Scandinavia, are thought to be among the cleanest.
