The Caesars wifes : above suspicion? / Stewart Perowne.- London [etc.] : Hodder and Stoughton, c1974.- 192 p., [16] p. di tav. : ill. ; 22 cm.

Riddles in mathematics : A book of paradoxes / Eugene P. Northrop.- London : Hodder and Stoughton Ltd., 1947.- X, 242 p. ; 21 cm.

The secret constitution : an analysis of the political establishment / Brian Sedgemore.- London : Hodder and Stoughton, c1980.- 256 p ; 23 cm