Urbis - Hardcover

Frontinus: de Aquaeductu Urbis Romae - Paperback

Production-Ready Crystal - Paperback

Great Aunt Ruby from California - Hardcover

Ruby Beginner's Crash Course: Beginner's Guide to Ruby Programming, Ruby On Rails & Rails Programming - Paperback

Rails Scales!: Practical Techniques for Performance and Growth - Paperback

Tp on AB - Paperback

Ruby Programming For Beginners: The Simple Guide to Learning Ruby Programming Language Fast! - Hardcover

Practical Ruby 3 Programming: Simpler than Python, offering concise syntax, reusable code, and maximum developer productivity - Paperback

Kwesi and Nana Ruby Learn to Swim - Hardcover

Learning Rails 3: Rails from the Outside in - Paperback

why's (poignant) guide to Ruby: in color - Paperback

Ruby Programming For Beginners: The Simple Guide to Learning Ruby Programming Language Fast! - Paperback

From Ruby to Elixir: Unleash the Full Potential of Functional Programming - Paperback

Ruby on Rails For Beginners: Rails Web Development Programming and Coding Tutorial - Paperback

Layered Design for Ruby on Rails Applications - Second Edition: Discover practical design patterns and modern abstractions for maintainable Rails appl - Paperback

Why's (Poignant) Guide to Ruby - Paperback

Ruby Pocket Reference: Instant Help for Ruby Programmers - Paperback

I Think It's Funny ... - Paperback

Head First Ruby: A Brain-Friendly Guide - Paperback

Polished Ruby Programming: Build better software with more intuitive, maintainable, scalable, and high-performance Ruby code - Paperback

Half Asleep in Frog Pajamas - Paperback

Tom - Paperback