In the series of action being taken against the mafia active in the field of School Education, the District Administration has conducted raids at different book depots in the city on Tuesday. The District Administration teams conducted raids at Gorakhpur-based Sangam Book Depot, Ukhri Tiraha-based New Radhika Book Palace, Children Book Depot, Naudara Bridge and Radhika Book Depot, Gol Bazar. As per sources, all these raids were conducted following the directives issued by Collector, Deepak Saxena to check selling of textbooks with fake ISBN Numbers. It may be mentioned that ISBN is the acronym for International Standard Book Number. This 10 or 13-digit number identifies a specific book, an edition of a book, or a book-like product (such as an audiobook). Since 1970 each published book has been allocated a unique ISBN. In 2007, assigned ISBNs changed from 10 digits to 13. ISBNs are helpful when you want to find and buy an exact copy of a book. There are unauthorized resellers of ISBNS and this activity is a violation of the ISBN standard.