New Serial Titles


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Biblio Noticias


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International Code of Conduct on Pesticide Management


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The understanding that some pesticides are more hazardous than others is well established. Recognition of this is reflected by the World Health Organization (WHO) Recommended Classification of Pesticides by Hazard, which was first published in 1975. The document classifies pesticides in one of five hazard classes according to their acute toxicity. In 2002, the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) was introduced, which in addition to acute toxicity also provides classification of chemicals according to their chronic health hazards and environmental hazards.







The Spanish American Reader


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Practice Makes Perfect: Spanish Vocabulary


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Building on the success of her prior book, Practice Makes Perfect: Spanish Verb Tenses, author Dorothy Devney Richmond helps learners attain a strong working vocabulary, no matter if they are absolute beginners or intermediate students of the language. She combines her proven instruction techniques and clear explanations with a plethora of engaging exercises, so students are motivated and hardly notice that they are absorbing so much Spanish. Practice Makes Perfect: Spanish Vocabulary also includes basic grammar and structures of the language to complement learners’ newly acquired words. "Vocabulary Builders" help students add to their Spanish repertoire by using cognates, roots, suffixes, prefixes, and other "word-building" tools.