/category > /category/5 > /book/4021","mainEntity":{"@type":"Book","author":"/author/آية الله السيد محمّد صادق الحسيني الروحاني","bookFormat":"http://schema.org/EBook","image":"https://lib.rafed.net/Books/4021_zubdat-alusul-04/images/cover.jpg","inLanguage":"Arabic","name":"زبدة الأصول[ج4]","numberOfPages":510,"offers":{"@type":"Offer","availability":"http://schema.org/InStock","price":"0","priceCurrency":"USD"},"publisher":"أنوار الهدى"},"author":{"@type":"Person","name":"آية الله السيد محمّد صادق الحسيني الروحاني"}}