au.\*:("PITTWELL LR")
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SOME COORDINATION EFFECTS IN NATURAL WATERS OF ETHIOPIAPITTWELL LR.1972; J. HYDROL.; NETHERL. ; 1972, VOL. 17, NUM. 0003, P. 225 A 228Serial Issue
THE DETERMINATION OF HYDROXYLAMINE IN ETHIOPIAN RIVERS AND LAKESPITTWELL LR.1975; MIKROCHIM. ACTA; AUTR.; DA. 1975; VOL. 2; NO 4-5; PP. 425-429; ABS. ALLEM.; BIBL. 8 REF.Article
DETERMINATION OF TRACES OF CARBONATE IN SOME NATURAL WATERS.PITTWELL LR.1969; MIKROCHIM. ACTA; AUT; 1969(7), NUM. 0004, P. 861 A 862Miscellaneous
MOLECULAR BAND SPECTRA HAZARDS IN TRACE ELEMENT DETERMINATIONS.PITTWELL LR.1969; CANAD. J. SPECTROSC.; CAN; 1969, VOL. 14, NUM. 0004, P. 130 A 131Miscellaneous
AN APPARATUS FOR THE ANALYSIS OF SMALL QUANTITIES OF CARBONATES ETC.PITTWELL LR.1968; MIKROCHIM. ACTA; AUT; 1968, NUM. 0005, P. 903 A 904Miscellaneous