1. Additional facts, observations, and conjectures relative to the generation of the opossum of North-America Author(s): Barton, Benjamin Smith, 1766-1815 Publication: Philadelphia : Printed by S. Merritt ..., 1813 Subject(s): DidelphisPostpartum PeriodAnimals, SucklingLactation
2. MELA: un buen método de planificación familiar basado en lactancia materna Publication: [Ecuador] : Centro Médico de Orientación y Planificación Familiar, [19--?] Subject(s): Family Planning ServicesPostpartum PeriodAmenorrheaLactationBreast Feeding
3. MELA: un buen método de planificación familiar basado en lactancia materna Publication: [Ecuador] : Centro Médico de Orientación y Planificación Familiar, [19--?] Subject(s): Family Planning ServicesPostpartum PeriodAmenorrheaLactationBreast Feeding
