The first known scientific study on dental fear occurred in 1954.

However since the 1978 reference no further study of the specimen has occurred and the species remains unnamed.

The solution is not execution, but further study and development of more effective identification and treatment programs before these tragedies occur.

These studies should occur before spectrum is allocated for major new developments in radio communications.

Several studies have occurred about Nilgiri tahr across the last three decade.

Dinosaurs occur throughout the formation, but their study has only occurred since the early 1990s.

The first scientific studies at the site occurred in 1859.

Some studies and experiences, especially initiations, must occur in sequence.

In the late nineteenth century, this study occurred primarily through the display of material artifacts in museums.

The proposed amendment would facilitate this airport expansion, yet no environmental study of any kind has yet occurred.