@Article{ NOGALES_BELTRAN_Bustos-:921-924,

author = { FRANCISCO NOGALES FERNANDEZ and ESTANISLAO BELTRAN MONTALBAN and M. Bustos- } ,

title = { ECTOPIC SOMATIC ENDODERM IN SECONDARY HUMAN YOLK-SAC },

journal = { Human Pathology },

year = { 1992 },

volume = { 23 },

pages = { 921-924 },

}