Additional ordering information or assistance may be obtained by writing to the NTIS, Attention: Customer Service, or by calling (703) 487-4660. Reference citations with no availability codes may be available at the location cited or in a library. BASIC REFERENCES l. "The Debate Over the Hydrogen Bomb,” Scientific American, Vol. 233, No. 4 H.F. York October 1975 Environmental Radioactivity, Second Edition M. Eisenbud Academic Press, New York 1973 Bikini-Enewetak Studies, 1964. Part 1 -- Ecological Observations A.D. Welander et al. Laboratory of Radiation Biology University of Washington 15 September 1966 UWFL 93 Report of the Commander, Task Group 7.1, March-May 1954, Operation CASTLE Task Group 7.1 June 1954 WT-940 EX Ref. Copy: NTIS as AD 995 017* Completion Report (U) Holmes and Narver, Inc. 1954 (A19> AD A995 081* History of Operation Greenhouse 1948-1951 E.R. Quesada Joint Task Force 3 December 1951 WI-47 {A02) AD 740 867* *Available from NTIS; order number appears before the asterisk. **Available at DOE CIC. **eNOt available. 414