Cover image not available
'This lecture was delivered at a conference organised by the Council of Christians and Jews, held between July 21st-23rd, at Ridley Hall, Cambridge, on the subject of "Judaism Observed".' - title page verso.
OBNB doesn't sell books, but you may be able to find a copy at one of these websites:
The interplay of Judaism and Jewish history by James Parkes. Published by Parkes Library in 1967. Publication and catalogue information, links to buy online and reader comments.