J.R. Kelly

4 books

Jul 5, 2014
Cover of Startup Andy and the Science Fair

Startup Andy and the Science Fair

Mar 4, 1991
Cover of Estimating for Builders and Quantity Surveyors

Estimating for Builders and Quantity Surveyors

Aug 13, 1986
Cover of Time and Human Interaction

Time and Human Interaction

Jun 1977
Cover of Top-down Structured Programming

Top-down Structured Programming