The identification of Africans with slavery required a new ideology.

Unequivocal identification often requires location information, which is often impossible in migrating birds.

Such reports are not comprehensive, and may be difficult to obtain, so that identifications require a large library.

He noted that identification required observing not only the blossom but also features like the shape and location of the prickles.

As a result, some identification may require lab analysis.

Precise identifications are difficult, and require expert knowledge.

No media allowed, and identification required of anyone wanting admission.

Due to the small size, positive identification usually requires x-ray diffraction analysis.

The reading and identification of individual kaō often requires specialist knowledge; whole books devoted to the topic have been published.

Good identification required you to look deep inside and see the impurities.