00401nam a2200145Ia 4500 230917s9999||||xx |||||||||||||| ||und|| 111018 MAIN English 547.59 G959H Gupta, R.R Heterocyclic Chemistry: principles,three and four membered heterocycles New Delhi Springer 2005 v-1 p. : x ; 422 BK 0 0 0 547_590000000000000_G959H 0 214500 MAIN MAIN 2006-08-02 1 547.59 G959H 240133 2024-10-14 12:10:00 2024-10-09 2023-09-17 BK 137920 137920