Embryology of the viviparous insects harold r hagan new york ronald press 1951 472 pp 650. Note citations are based on reference standards however formatting rules can vary widely between applications and fields of interest or study the specific requirements or preferences of your reviewing publisher classroom teacher institution or organization should be applied. Harold r hagan article first published online 30 apr 2012 doi 101111 j2164 09471950tb01878x 1950 the new york academy of sciences. Embryology of the viviparous insects paperback june 23 2012 by harold raymond hagan author be the first to review this item see all 3 formats and editions hide other formats and editions price new from used from hardcover please retry 635 635 . In viviparous species the embryos develop inside a transformed reproductive system or body cavity of the female in this case females give birth to offspring that is ready to start an active live hr haganembryology of viviparous insects ronald press new york 1951 google scholar heymons 1912 r heymonsber den genitalapparat und
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