Allan Y. Ng

• Practice Exams for the California Civil Surveying Exam
• PPI California Civil Surveying Practice Exams, 4th Edition EText - 1 Year
• PPI California Civil Surveying Solved Problems, 3rd Edition - Comprehensive Practice for the California Civil Surveying Exam
• Software Technology and Engineering - Proceedings of the International Conference on Icste 2009
• Solved Problems for the California Civil Surveying Exam
• Surveying and Geomatics Engineering