This observation formed the basis for elite pluralism.

Their direct observations form the primary data source for our report.

Khalidi states that "Mas'udi's own observations form a valuable part of his work."

Moreover, the observations in the notes have formed an important basis for the study of most of our major forest insect pests.

The observation formed the analysis and the analysis determined his next tactic.

His observations on diabetes formed a chapter of Pharmaceutice rationalis (1674).

Can these observations form the basis of a definition?

These observations form the basis of my opinion.

His observations formed the most interesting material that was gathered by the expedition, and made up fully half of this report.

His observations formed the foundation for the first complete description of West Greenland waterways, including information about wind and ice.