חשבון

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Arithmetic.

A Mental arithmetic / by G.P. Quackenbos, LL.D.

G. P. Quackenbos (George Payn), 1826-1881

The elements of arithmetic / by Augustus De Morgan.

Augustus De Morgan 1806-1871

The rudiments of written arithmetic : containing slate and black-board exercises for beginners, and designed for graded schools / edited by Daniel W. Fish.

Horatio N. Robinson (Horatio Nelson), 1806-1867

Arithmetic theoretical and practical / by John Sturgen Mackay.

J. S. Mackay (John Sturgeon), 1843-1914

Reading working drawings, arithmetic, measuring instruments, precision instruments, lathe work.

מדעים;מתמטיקה;תפילה וברכות.

Arithmetik und Algebra / von Hermann Schubert.

Hermann Schubert 1848-1911