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Office of the Administrator (Lisa P. Jackson) - Environmental Protection Agency (EPA) and National Aeronautics and Space Administration (NASA) Memorandum of Undertanding (MOU) at Howard University Middle School of Mathematics and Science [412-APD-589-2010-04-26_EPA-NASA_MOA_055.jpg]

Office of the Administrator (Lisa P. Jackson) - Environmental Protection Agency (EPA) and National Aeronautics and Space Administration (NASA) Memorandum of Undertanding (MOU) at Howard University Middle School More

Office of the Administrator (Lisa P. Jackson) - Environmental Protection Agency (EPA) and National Aeronautics and Space Administration (NASA) Memorandum of Undertanding (MOU) at Howard University Middle School of Mathematics and Science [412-APD-589-2010-04-26_EPA-NASA_MOA_054.jpg]

Office of the Administrator (Lisa P. Jackson) - Environmental Protection Agency (EPA) and National Aeronautics and Space Administration (NASA) Memorandum of Undertanding (MOU) at Howard University Middle School More

Office of the Administrator (Lisa P. Jackson) - Environmental Protection Agency (EPA) and National Aeronautics and Space Administration (NASA) Memorandum of Undertanding (MOU) at Howard University Middle School of Mathematics and Science [412-APD-589-2010-04-26_EPA-NASA_MOA_052.jpg]

Office of the Administrator (Lisa P. Jackson) - Environmental Protection Agency (EPA) and National Aeronautics and Space Administration (NASA) Memorandum of Undertanding (MOU) at Howard University Middle School More

Incipit liber tercius de vocabulo arithmetice disciplinae

Beginning text of the third book of Etymologiae, about arithmetic. Title page in: De vocabulo arithmetic disciplinae / Saint Isidorus, Bishop of Seville. In his Etymologiae. [Augustae Vindelicorum] : G. Zainer, More

Portret van paus Leo X - Ludwig Gottlieb Portman

Paus Leo X zit aan een tafel en bladert door een bijbel. In zijn hand houdt hij een loep om het boek te bestuderen. Op de tafel staat een bel.

De Arithmetica Filippo Calandri for Lorenzo di Medici

Public domain reproduction of a relief art print, medieval or early renaissance, free to use, no copyright restrictions image - Picryl description.

[Illustrated arithmetic problem showing man stamping on fruit in rectangular tub and man standing in round tub, with mathematical equations and surrounding text]

Woodcut illus. and text in: Aritmetica / Filippo Calandri. Florence : L. Morgiani and J. Petri, 1492. Published in: The tradition of science / Leonard C. Bruno. Washington, D.C. : Library of Congress, 1987, p. 234.