I am not trying to recreate precise geographic chronologies of the Russo-German War, but to give, an account of the almost inconceivable difficulties we faced.

The fragmentary nature of the surviving evidence makes it difficult to give a precise chronology of the development.

A more precise chronology of what occurred in a dark and crowded ninth-floor apartment at 419 East 93rd Street was still being pieced together, the police said.

The precise chronology of Derrida's work is difficult to establish, as many of his books are not monographs but collections of essays that had been printed previously.

The precise chronology of Walter's westward expansion is unknown for certain, but he and Somerled likely had conflicting ambitions in the region.

Due to the nature of Zach's life it is difficult to establish a precise chronology.

American officials caution that the times of each statement heard on the tapes remain approximate, and are still reviewing them to determine a precise chronology.

"I couldn't sit down today with a calendar and a map of the Mekong Delta and produce a precise chronology of the months I spent in combat."

Later scholars were unable to push a precise chronology back past Sima Qian's date of 841 BC.

This would enable them to chart the precise chronology of how the jetliner came apart.