A History of the Mathematical Theories of Attraction and the Figure of the Earth From the Time of Newton to That of Laplace; Volume 1 - Hardcover
Spherical Trigonometry: For The Use Of Colleges And Schools, With Numerous Examples (1878) - Paperback
!Ah y Le Lo Lay, Le Lo Ley! Musica Tipica de Puerto Rico - Paperback
!Búscalo! (Look It Up!): A Quick Reference Guide to Spanish Grammar and Usage - Hardcover
!Búscalo! (Look It Up!): A Quick Reference Guide to Spanish Grammar and Usage - Paperback
!Eureka! - Hardcover