000 00604nam a2200193Ia 4500
919 _a021299
082 _a541.2254
_bN67
100 _aAllock, H.R.
245 _aHeteroatom ring systems and polymers
_b
_cby H. R. Allock.
260 _aNew York
_bAcademic
_c1967
300 _axi,401p.
690 _aPolymers - Structure
964 _a
_b0
_c
_d
_e
_f
_g
999 _c20363
_d20363