00503nam a22001577a 4500003000400000005001700004008004100021020001800062080001700080100001700097245010400114260002900218300001000247653006900257700001900326OSt20260720113250.0201109b           ||||| |||| 00| 0 eng d  a9788126598076  a547.7bQUI/F  aQuin,Louis D  aFundamentals of heterocyclic chemistry:bImportance in nature & in the synthesis of pharmaceuticals  bWiley.aNewdelhi.c2019.  a327p.  aHeterocyclic chemistry-Hetrocyclic compounds-Oxygen heterocycles  aJohn A,Tyrell