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...ped out of school at age 14 to become a copy boy for the ''New York Sun'', with the ultimate aspiration to become a journalist.<ref name="NYT Obit" /><ref ...ded reading and discussion of difficult works (as judged for each grade). With [[Max Weismann]], he founded The Center for the Study of The Great Ideas.

...g|thumb|3 Slates and 2 Styli. Top slate is metal for 8.5 by 11 inch paper with four lines. Yellow slate is plastic. Bottom slate is for 3 by 5 inch [[Ca ...e slate consists of two pieces of metal, plastic or wood fastened together with a hinge at one side.<ref name="Alpha Chi Omega 1908"/><ref name="Harry Houd

...es or objects used as symbols to convey meaning. They can represent items, people, activities and/or events, and usually either look or feel similar to what ...evelop language in individuals with little or no speech and/or [[cognitive disabilities]].<ref name=rowsch00/>

...stem|reproductive]] and [[nervous system|nervous]] systems. It interferes with the development of the nervous system and is therefore particularly toxic t ...xists in many homes, especially older ones; thus children in older housing with chipping paint are at greater risk. Prevention of lead exposure can range

'''Lead''' is a main-group [[Chemical element|element]] with symbol '''Pb''' ({{lang-la|plumbum}}) and [[atomic number]] 82. Lead is a s ...es in air to produce the commonly observed dull luster normally associated with lead. It is a [[density|dense]], [[ductile]], very soft, highly malleable,

| Cerebral Autosomal Dominant Arteriopathy with Sub-cortical Infarcts and Leukoencephalopathy | [[Dementia with Lewy bodies]]

[[Image:Infant with baby bottle.jpg|right|thumb|250px|An [[infant]] being fed from a [[baby bot ...complementary food and a suitable breast [[milk substitute]]. Nonetheless, with few exceptions the WHO report recommends exclusive [[breastfeeding]] for th