Reliable data for 2003 and 2004 are not out yet.
There are no reliable data on them before the 15th century.
For the rest of it, he said, there is little reliable data.
The total production was 350,000 t, although no reliable data were available for China.
Reliable data are difficult to come by, as has already been stated here several times.
There are no reliable data, however, on whether their numbers have grown or who they may be.
There is little reliable data showing the impact of the problem, however.
"So we're trying to respond quickly" to the need for more reliable data.
So we need to have reliable data on education, science, research and innovation.
To do this, however, we must first have reliable and representative data.
