{
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    "nstc": null,
    "title": "How to plan a crusade",
    "subtitle": null,
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    "collection_part_number": null,
    "annotation": null,
    "description": "In this highly original and enjoyable book, Christopher Tyerman focuses on the massive, all-encompassing and hugely costly business of actually preparing a crusade. The efforts of many thousands of men and women, who left their lands and families in Western Europe, and marched off to a highly uncertain future in the Holy Land and elsewhere have never been sufficiently understood. How to Plan a Crusade is fascinating on diplomacy, communications, propaganda, the use of mass media, medical care, equipment, voyages, money, weapons, credit, wills, ransoms, animals, and the power of prayer. It brings to life an extraordinary era in a novel and surprising way.",
    "imprint": null,
    "language_code": "eng",
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    "page_count": 432,
    "duration_seconds": null,
    "publication_date_first": "2016-09-29",
    "publication_date_latest": "2016-09-29",
    "cover_url": null,
    "editions": [
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            "isbn": "9780241954652",
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    "updated_at": "2025-10-31T00:22:27+00:00",
    "publisher": {
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        "slug": "penguin-uk",
        "name": "Penguin UK",
        "created_at": "2025-09-19T13:08:37+00:00",
        "updated_at": "2025-09-19T15:10:59+00:00"
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    "contributors": [],
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    "subjects": [
        {
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