Through patient and persistent research and the development of new observational techniques, he was able to obtain many remarkable results.

Due to improved observational techniques, the rate of detections has increased rapidly since then.

Data was gathered using variety of observational techniques which are described in more detail in the section 12.

These problems are examined with a combination of theoretical, numerical and observational techniques.

But two specialists in the observational techniques and history of astronomy now say she got it wrong.

Over 80% of the series was based on traditional observational techniques in the wild.

He accomplished this through the observational technique of direct cinema.

These advances in observational technique require associated interpretation and theoretical models that explain what the observations mean.

But improvements in observational techniques over the last 15 years have removed any uncertainty.

In marketing research, the most frequently used types of observational techniques are: