TY - GEN AU - Curbelo,A A TI - [Conceptual problems in our public health demography] SN - 0034-8899 PY - 1975///1223 KW - Abortion, Spontaneous KW - Female KW - Fetal Death KW - Humans KW - Infant Mortality KW - Infant, Newborn KW - Pregnancy KW - Spain N1 - Publication Type: English Abstract; Journal Article ER -