TY  - GEN
AU  - Penczek, S
TI  - Polymerization of Hetrocycles (ring opening ): Main lectures  presented at the international symposium on polymerization of hetrocycles ( ring opening) Warsaw Jablonna Poland 23- 25 , June 1975
U1  - 547.59 PEN 
CY  - Newyork, Pergamon Press
KW  - Polymerization hetero cycle / Ions  / Ion pairs / Anionic polymerization
ER  -