000
00240 a2200097 4500
082
_a
507.2
_b
N213c
245
1
_a
CURRENT RESEARCH AND DEVELOPMENT IN SCIENTIFIC DOCUMENTATION
260
_a
_b
_c
1958-
964
_g
CIRC
997
_a
37850 v. 6 C
999
_c
454903
_d
454903