Lith, J. M. M. v. (1994). First trimester screening for Down's syndrome. s.n.].
Chicago Style (17th ed.) CitationLith, Johannes Marinus Maria van. First Trimester Screening for Down's Syndrome. [S.l.: s.n.], 1994.
MLA citiranjeLith, Johannes Marinus Maria van. First Trimester Screening for Down's Syndrome. s.n.], 1994.
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