Fritz Feigl Spot tests in organic analysis. Ed 6 - 6th Edition. - Amstedam Elsevier 1960 - 675p Fritz Feigl & Ralph E. Oesper: Spot tests in organic analysis. Ed 6. (6th Edition.) Amstedam. Elsevier, 1960.--(547.34834FEI) ENGLISH Dewey Class. No.: 547.34834 / FEI