{
    "id": 296389,
    "slug": "een-geheimzinnig-plan-ria-mourits-den-boer",
    "nstc": null,
    "title": "Een geheimzinnig plan",
    "subtitle": null,
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    "annotation": null,
    "description": "Mark maakt een prachtig plan als hij denkt aan de arme kinderen. Maar tot zijn grote teleurstelling werkt het idee niet. Daarom maakt hij samen met zijn zus Lia een nieuw plan. Het wordt een prachtig plan! Maar... wat ze maken in hun geheime kamer, mag niemand weten. Daarom hebben ze samen een sleutel, zodat er niemand anders in de kamer kan. Wat zijn Mark en Lia benieuwd naar het resultaat van hun actie. Zouden ze u de arme kinderen kunnen helpen?",
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    "language_code": "dut",
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    "publication_date_first": "2016-09-01",
    "publication_date_latest": "2016-09-01",
    "cover_url": null,
    "editions": [
        {
            "isbn": "9789402900545",
            "product_form": "ED"
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    ],
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    "created_at": "2025-09-19T13:12:13+00:00",
    "updated_at": "2025-11-16T03:54:26+00:00",
    "publisher": {
        "id": 3501,
        "slug": "banier-bv-uitgeverij-de",
        "name": "Uitgeverij De Banier",
        "gau": false,
        "created_at": "2025-09-19T12:42:42+00:00",
        "updated_at": "2025-09-19T15:13:43+00:00"
    },
    "contributors": [
        {
            "id": 174951,
            "slug": "ria-mourits-den-boer-2",
            "key_names": "Mourits- den Boer",
            "names_before_key": "Ria",
            "prefix_to_key": null,
            "contributor_role": "A01",
            "readable_contributor_role": "Author"
        }
    ],
    "genres": [],
    "subjects": [
        {
            "scheme_identifier": "32",
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            "subject_code": "282",
            "created_at": "2025-09-19T13:12:13+00:00",
            "updated_at": "2025-09-19T13:12:13+00:00"
        }
    ],
    "tags": [],
    "campaigns": []
}