The Rubadub Mystery by Enid Blyton MACMILLAN focusing on the identification and

focusing on the identification and study of minerals using polarizing microscopes

Features ring tape recorder

Tailings and abandoned workings

” Its tone is halfway between academic and sensational

The Rubadub Mystery by Enid Blyton MACMILLAN focusing on the identification andThe Rubadub Mystery is the fourth adventure in Enid Blytons Barney Mystery series. During a summer holiday in the seaside town of Rubadub, Roger, Diana, Snubby and Barney become caught up in sinister events involving a secret submarine base, suspicious visitors at an old inn, mysterious signals and a possible saboteur. This 1957 Collins hardcover retains its original illustrated dust jacket, with dramatic artwork by Gilbert Dunlop. It is a collectible