A new two-volume history of Russia's turbulent 20th century is being hailed inside and outside the country as a landmark contribution to the swirling debate over Russia's past and national identity.

"Removing his name from welcoming signs is an unforgivable slight to a man who made landmark contributions to our state."

Some of these publications are regarded as landmark contributions in the field of materials science.

The Whitley Medal may be awarded to a publication deemed to be of superior quality that makes a landmark contribution to the understanding, content or dissemination of zoological knowledge.

Ulric Neisser's 1967 book Cognitive Psychology was a landmark contribution.

Grigori Perelman is a Russian mathematician who has made landmark contributions to Riemannian geometry and geometric topology.

One of the first social science institutes in the nation, the Bureau made landmark contributions to communications research, public opinion polling, organizational studies, and social science methodology.

Written in superb prose, the Smart Machine deserves to be described as a landmark contribution to the cross- disciplinary field of the history and social psychology of work.

For their landmark contributions to the science of genetics, an American and a Canadian yesterday shared the 1993 Nobel Prize in Chemistry.

Aside from his influence on anthropology, Geertz' landmark contributions to social and cultural theory were also influential for geographers, ecologists, political scientists, scholars of religion, historians, and other humanists.