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 | - ????? ????????
- ???? ?? ????????, ??????? ?????? ?????????? ?? ?????.
http://www.ort.org.il/elements/
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- ????? ?????? ?? ??????????? ?????? ???? ????? ??????? ???????? ???? ??????, ??????? ??????.
http://maagar.openu.ac.il/opus/bin/en.jsp?enZone=Forum4252
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 | - ?????
- ???? ????? ?????? ???????? ????? ??????. ???? ???? ??????? ????? ?? ??????.
http://www.mkm-haifa.co.il/schools/ironig/chemistry/chemi_hp0.htm
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 | - ????? ????? ????????
- ?????? ?? ????? ????? ???????? ??????? ????? ???? ?????, ???? ?????? ?????? ??????.
http://www.tau.ac.il/~pet/
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- ????? ????? ?????? ??????? ????? ???? ????: ???????, ???????, ???????? ??? ????? ?????.
http://www.zinman.org.il/html/bio/acid/him.html
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