24 MAY 1975, page 11

Multiplication

Douglas Houghton People Populating Derek Llewellyn-Jones (Faber and Faber £3.95) Malthus was proved wrong in many ways because he overlooked technological advances in food......

Subtraction

Kenneth Griffith Gallipoli Eric Bush (Allen and Unwin £7.25) Some sixty years ago a child named Eric Bush was amongst the men of Australia, New Zealand, India, Britain and......