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prvky
SYS d004602 LBL 00000cz--a2200000n--4500 005 20250606213557.7 008 990101|||anznnbabn-----------|-a|a------ 040 $b slo $a DNLM $d BA006 $d BA006 065 $a D01.268 066 $a 01 $c 03 150 $a prvky $2 slo 450 $w v $a Element $2 eng 450 $w v $a prvok $2 slo 450 $w v $a element $2 slo 450 $w v $a elementy $2 slo 550 $7 sllk_us_auth*d007554 $Y Isotopes $w p $a izotopy 550 $7 sllk_us_auth*d011868 $Y Radioisotopes $w p $a rádioizotopy 680 9-
$i Substances that comprise all matter. Each element is made up of atoms that are identical in number of electrons and protons and in nuclear charge but may differ in mass or number of neutrons. $2 eng 680 $a general or unspecified; prefer specifics; ISOTOPES and RADIOISOTOPES and many specifics are also available; m for metastable = RADIOISOTOPES or specific precoordinated radioisotope $2 eng 750 -2
$a Elements $2 eng 980 $x M
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