W-i- 111 (<1 



The ISI staff indexes all significant items (articles, 

 reports of meetings, letter, editorials, correction notices, etc.) 

 from about 2600 major scientific and technical journals. In 

 addition, the SCISEARCH file for 1974-75 includes approximately 

 38,000 items from Current Contents — Clinical Practice. Beginning 

 January 1, 1976, all items from Current Contents — Engineering, 

 Technology, and Applied Science and Current Contents — Agriculture, 

 Biology, and Environmental Sciences that are not presently covered 

 in the printed SCI are included each month. This expanded 

 coverage adds approximately 58,000 items per year to the SCISEARCH 

 file. 



WATER RESOURCES ABSTRACTS File 117 



1968-present , 176,000 records, monthly updates (U.S. Dept. of 

 the Interior, Washington, D.C.). 



Water Resources Abstracts is prepared from materials col- 

 lected by over 50 water research centers and institutes in the 

 United States. The file covers a wide range of water resource 

 topics including water resource economics, ground and surface 

 water hydrology, metropolitan water resources planning and 

 management, and water-related aspects of nuclear radiation and 

 safety. The collection is particularly strong in the literature 

 on water planning (demand, economics, cost allocations), water 

 cycle (precipitation, snow, groundwater, lakes, erosion, etc), and 

 water quality (pollution, waste treatment). WRA covers predomi- 

 nantly English-language material and includes monographs, journal 

 articles, reports, patents and conference proceedings. 



173 



