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  1. parallax method

  2. Seasons - exploring misconceptions

  3. State Of The World's Forests (SOFO) 2003

  4. Livestock Water Needs In Pastoral Africa In Relation To Climate And Forage

  5. Decentralized rural development and the role of self help organizations

  6. Non-wood Forest Products And Income Generation

  7. Mangroves: What Are They Worth?

  8. Observations of the Milky Way – our galaxy

  9. Variable Stars - Why we know how far they are

  10. Saros 136 - the eclipse of the century