000
00297nam a2200121Ia 4500
008
220104s9999 xx 000 0 und d
041
_a
ENGLISH
082
_a
547.59
100
_a
A.R. Katritzky
245
0
_a
The Principles of Heterocyclic Chemistry
260
_b
Pharma Med press
942
_c
BK
999
_c
188509
_d
188509