Program: JSTOR (Electronic Holdings)
- Publisher: U.S. Dept. of Health, Education, and Welfare, Public Health Service, National Institutes of Health, National Institute of Environmental Health Sciences ; Supt. of Docs., U.S. G.P.O., distributor
- Print ISSN: 0091-6765
- Electronic ISSN: 1552-9924
- OCLC Number:
- Summary Holdings: (Apr 1972-Dec 2012)
- Holdings Format: Digital