000
00273nam a22001217a 4500
999
_c
503397
_d
503397
082
_a
037
_b
PRO/G.23
100
_a
Prokhorov,A M.
245
_a
Great Soviet encyclopedia,Vol.23
250
_a
3rd ed.
260
_a
Newyork
_b
Macmillan
_c
1979
300
_a
746p.
942
_c
BK