Currena~amments "

ThM is the seventh in a series of essays reporting the papers most cited in the Science Citation Znde..@ (MY) from 1961 to 1982. To date, we have listed 600 papers in groups of 100.1 The seventh group is listed here in alphabetic order by first author. (See Table 1.) As expected, life sciences papers predominate and account for about 70 percent of the articles, Thw compares to 85 percent in the first part of the series, and 66 percent in the sixth part. Physical sciences papers account for 25 percent of the articles in Table 1, and papers from other disciplines, such as statistics and psychology, account for 5 percent. Several papers are difficult to classify because they discuss overlapping problems and methods involving different disciplines. I@ example, R. Pete, Oxford University, England, and colleagues pubiiihed a two-part paper in the British Journal of Cancer that describes a statistical design and methodology for comparing survival rates of dtiferent groups of patients, includlng those with Ieukemia.z Part I of th~ paper has been cited “only” 417 times since it was published. But Part II appears in Table 1, and, as dkcussed later, is the most-recent paper in the list. Table 2 includes the journals that published at least 2 of the 100 articles. The Journai of Biological Chemistry published 6 papers, and now accounts for 11 percent of the 700 articles discussed so far. Multidisciplinary journals such as Nature (which includes Nature: New Biology) (4 percent) and Science (3 perMav 20, 1985 ,-