000			00543nam a2200181Ia 4500
005			20260808125257.0
008			260808s9999||||xx |||||||||||||| ||und||
035			_a784
041			_aENG
082			_a547.6
100			_aAllen, Charles Francis Hitchcock
245		0	_aSix-membered heterocyclic nitrogen compounds with four condensed rings (vol-2)
260			_aNew York _bInterscience Publication _c1951
490			_a2
505			_aorganic chemistry, synthesis, chemical reactions
650			_aChemistry _bOrganic chemistry
942			_cBK
999			_c784 _d784