000
00274 a2200121 4500
008
151002tApr.-June 1977
245
_a
Mutation Research
250
_a
Vol. 43
260
_a
U.S.A.
260
_b
Elsevier Scientific Publishing Company
260
_c
Apr.-June 1977
942
_c
BV
999
_c
4093
_d
4093