TY - JOUR T1 - On the Marsupial Ovum, the Mammary Pouch, and the Male Milk Glands of Echidna hystrix JF - Proceedings of the Royal Society of London (1854-1905) VL - 38 SP - 72 EP - 74 PY - 1884/01/01/ UR - http://dx.doi.org/10.1098/rspl.1884.0067 M3 - doi:10.1098/rspl.1884.0067 AU - Haacke, W. ER -