by Betty G. BirneyPaperback details (UK). details (USA). details (Germany). details (Canada). ISBN: 978-0-14-241514-6 ISBN-10: 0-14-241514-6 Puffin Books · 2010 |
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2011 | Audio CD | Adventure According to Humphrey |
2009 | Hardcover | Adventure According to Humphrey |
2008 | Paperback | Adventure According to Humphrey (World Book Day 2008) |