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024 _a71223
037 _cTextual
040 _aCSL
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_cCSL
041 _aeng
082 _aG:17, K6;4-;5
100 _aKnudsen Jens W
245 0 _aBiological technqiues
260 _c1966
300 _ap.
_ccm.
650 _aBiology popular description
942 _hG:17, K6;4-;5
_cTEXL
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999 _c34824
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