Derek A.

Grump Goes Galumphing

By Sampson, Derek A., Stern, Simon

Grump and the Hairy Mammoth

By Sampson, Derek A.

Grump Strikes Back

By Sampson, Derek A., Stern, Simon

Grump Goes Galumphing (Read Aloud Books)

By Sampson, Derek A.

A Nature Conservation Review: The Selection of Biological Sites of National Importance to Nature Conservation in Britain, Volume 2, Site accounts

By Ratcliffe, Derek A.

Grump and the Hairy Mammoth

By Sampson, Derek A.

On Quaternions and Octonions

By Conway, John H., Smith, Derek A.

Introduction to Computer-Intensive Methods of Data Analysis in Biology

By Roff, Derek A.

The Books of Enoch, Jubilees, and Jasher

By Shaver, Derek A.