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THE METABOLIC GRADIENTS OF VERTEBRATE EMBRYOS. I. TELEOST EMBRYOS
Vol 40, Page 32, Date 1921-01-01
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OBSERVATIONS ON THE DISTRIBUTION AND HABITS OF THE BLIND TEXAN CAVE SALAMANDER, TYPHLOMOLGE RATHBUNI
Vol 40, Page 73, Date 1921-02-01
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THE CHROMOSOMES OF PSEUDOCOCCUS NIPAe
Vol 40, Page 259, Date 1921-05-01
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THE MIGRATION OF THE PRIMARY SEX-CELLS OF FUNDULUS HETEROCLITUS
Vol 40, Page 325, Date 1921-06-01
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SPERMATOGENESIS OF APHIDS; THE FATE OF THE SMALLER SECONDARY SPERMATOCYTE
Vol 40, Page 349, Date 1921-06-01