I don't Know what you mean by classification, though.

Discovery of fundamentals by classification is never good research.

However, by general classification it is part of the Nihilist family of ciphers.

Below are lists of ethnic groups in China by linguistic classification.

There are, by conventional classification, three types of material involved in building a fire without manufactured fuels.

By classification, some 37% of the total land area is forest land.

A simple list, by country or classification, of Unesco heritage sites.

Privacy: obscuring a matter from media attention by anonymity, confidentiality, court order, military classification, or other means.

The organization of knowledge by classification and indexing is a valuable activity in which much more work must still be done.

The following is a list of champions by sport and classification for the 2011-2012 academic school year.