R. H. Evans
O' Level Mathematics
Concrete bridges
A' Level Pure Mathematics and Statistics (Questions & Answers)
Esboniad ar Efengyl Ioan (yr ail Ran. Penodau XI-XXI)
O Level Physics (Questions & Answers)
Pre-stressed Concrete; Theory and Design
Pure & Applied 'A' Level Mathematics (Questions & Answers)
The Analysis of Indeterminate Structures