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Formal Logic is a study of inference with purely formal content. The first rules of formal logic were written over 2300 years ago by Aristotle and are still vital to many modern disciplines like Linguistics and Computer Science.
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Read a picture book about various jobs around the world, including a rickshaw driver from Bangladesh and a waitress from the United States of America. World at Work is suitable for ages 4–7.


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Guacamole is a spicy Mexican paste made from crushed avocado and various seasonings, usually including onions, peppers, garlic and tomatoes. Guacamole is used as a condiment, an ingredient, and as an appetizer when served with tortilla chips.


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