ReadThe Portobello Bookshop Gift Guide 2025

Books etc
Fiction
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Contemporary & Classic Fiction Crime & Mystery Fantasy Graphic Novels & Comics Browse more Fiction categories
Non-fiction
Be it biography, history, nature writing or any other form of true story, non-fiction writing is often loaded with just as much suspense and character as the most exciting novel
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Children’s, Teenage & Educational
These stories for children and young adults will pique imaginations and inspire young readers
Children's Fiction Children's Non-Fiction Board Books, Picture Books & Activity Books Children's Poetry & Anthologies Browse more Children’s, Teenage & Educational categories
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Gift cards

Richard A Hay Author

Interrupted Time Series Analysis cover

Interrupted Time Series Analysis

4 authors - Paperback

£36.99