COLLABORATIVE STUDY OF FLAME PHOTOMETRIC METHOD FOR SODIUM IN FERTILIZERS - COROMINAS, LF (GUANOS & FERTILIZANTES MEXICO SA,INSURGENTES NUM 1079,APARTADO POSTAL NUM 18 964,MEXICO CITY 18,MEXICO, 1973)
J ASSO OFFIC ANAL CHEM
Keywords: COLLABORATIVE STUDY, FLAME PHOTOMETRIC, METHOD FOR SODIUM, FERTILIZERS; QUIMICA; ANALITICA; FOTOMETRIA