The donkey as a draught power resource in smallholder farming in semi-arid western Zimbabwe 2. Performance compared with that of cattle when ploughing on different soil types using two plough types

This article focuses on the research activities performed in Argentina in the field of Analytical Chemistry in the last five years. It is organized in four major areas: I) Spectroscopy, II) Mass Spectrometry, III) Chromatography and IV) Electrochemistry. Citations, in general, are limited to journal articles and usually do not include patents, proceedings, reports and dissertations.