An Invisible Friendship
| Copyright Holder | Katharine Moore, Joyce Grenfell |
| Publisher | Futura, Macdonald & Co, (Publishers) |
| First Published by | Macmillan |
| Typeset by | Rowland Phototypesetting Ltd |
| Printed and Bound by | Hazell Watson & Viney Ltd |
| Format | Paperback |
| Language | English |
| Location | UK |
| Copyright | 1981 |
| This Edition Published | 1982 |
| Pages / Font | 320 pages |
| ISBN | 0-7088-2219-3 |
| Barcode | 9 780708 822197 |
| Price | £1.95 U.K. |
| Price | $6.95 Australia |
Added by Supernaut1970