"20pearls" - 1 õppematerjal

Pärlikasvatus

wikimedia.org/wikipedia/commons/thumb/e/ed/Margaritifer a_margaritifera-buiten.jpg/200px-Margaritifera_margaritifera-buiten.jpg 8. http://upload.wikimedia.org/wikipedia/commons/thumb/2/24/Black_pearl _and_his_shell.jpg/800px-Black_pearl_and_his_shell.jpg 9. http://www.apus.ru/im.xp/049056054124052057056055049050.jpg 10. http://www.astrologicalgem.com/images/sample_pearl.jpg 11. http://www.gemdiamond.com/department/images/home/Pearls.jpg 12. http://www.us.luluherbal.com/Mother%20of%20Pearls%20from %20Oman.jpg 13. http://www.avenyy.ee/main.php? pg=archive_article&ArticId=204&CatId=13 14. Mait Martin, Maie Toom, Urmas Kokassaar. BIOLOOGIA põhikoolile II. AS BIT 2002