ISBN: 7506435403ISBN13: 9787506435406effective use of your timeby SHI GUANG BIAN ZHUSee ReviewsISBN: 7506435403ISBN13: 9787506435406FormatsPaperbackOut of stockConditionsLike NewUnavailableVery GoodUnavailableGoodUnavailableAcceptableUnavailableNewUnavailableFormatsPaperback (Out of stock)ConditionsUnavailableSee all 1 editions