The first systematic data came from the United States itself in the 1940's and '50's.

The mission objectives of Oceansat-2 are to gather systematic data for oceanographic, coastal and atmospheric applications.

There are no systematic data on the extent of such exploitation, and one must rely on anecdotal evidence.

With this lack of systematic data, no statistical values for reconstruction of the original ecosystem can be calculated.

There is little systematic data on the prevalence of DID.

"The vernacular, in which the minimum attention is paid to speech, provides the most systematic data for linguistic analysis."

While systematic data on service quality are now available for several cities, they are not publicly available.

Written sources provide systematic periodic data that can show trends and provide other relevant facts.

With regard to this matter, the first thing that becomes clear is the lack of systematic data.

Dr. Taubman is one of the few people who have collected systematic data on toilet training.