00269pam a2200109 a 4500020000500000041000800005082001300013100001200026245007200038260003800110300001100148 c aeng a570bVOG aVogel . aVogel`s Textbook of Parctical Organic Chemistry hTextual Documents a[s.l]:bE.L.B.S. Longman ,c1978. a1371p.