71.   When I wrote a popular book recently, I was advised that each equation I included would halve the sales.

72.   In general this book is written in a register we consider appropriate for a textbook of this type.

73.   In writing the book, EV Thompson drew on his experiences as a wartime evacuee, taken from London in the dead of night to the Cotswold countryside.

74.   Dr Howe had written a book on drama.

75.   He was writing a book.

76.   Professor Kohr was writing a book on his specialist topic, philosophy.

77.   Her mother Sybil has written a book of poems in tribute.

78.   Vicars wife, Rosemary Hawthorne has already written a book about knickers.

79.   To hitch hike right round the coast of Ireland and to write a book about his experiences.

80.   Professor Hugh Foot, Head of Psychology at the University of Strathclyde wrote a book on humour and laughter some years ago with Professor Tony Chapman at Leeds University.