SQL: Advanced SQL Query optimization techniques by Andy Vickler Paperback Book

SQL: Build Complex SQL Queries by Vickler, Andy [Paperback]

PHP: Advanced PHP functions by Vickler, Andy [Paperback]

SQL Server 2012 Query Performance Tuning by Grant Fritchey (English) Paperback B

R Programming: R Basics for Beginners by Vickler, Andy [Paperback]

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Cobol: Cobol Database Interaction by Vickler, Andy [Paperback]

Agile Project Management Beginner's ste Andy Vickler Paperback