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.

- 250 amusing puzzles + surprise in 250 Classic Killer Sudoku puzzle - very hard levels (need to download and print)- all riddles have only one verified solution- 2 puzzles on 1 page, very practical and convenient- a lot of free space for the progress of your thoughts- good mind support in excellent form- large font- develops memory, logical thinking, helps to focus- creative possibilities are expandingIdeal gift for all fans of puzzles. An excellent book for free time and learning of the mind. I hope you enjoy the book. I would be very grateful if you write a review.Best regards,Andrii Pitenko

"Now in paperback, Rising Powers, Shrinking Planet surveys the energy driven dynamic that is reconfiguring the international landscape: Russia, the battered Cold War loser, is now the arrogant broker of Eurasian energy, and the United States, once the world's superpower, must now compete with the emerging "chindia" juggernaut for finite resources. Forecasting a future of surprising new alliances and explosive danger, Klare, the preeminent expert on resource geopolitics, argues that the only route to surival in our radically altered world lies through international cooperation"--Book cover

This best selling book delivers the most current, complete, and authoritative pharmacology information to students and practitioners. All sections are updated with new drug information and references. New! Many new figures and diagrams, along with boxes of highlighted material explaining the "how and why" behind the facts.