100 元券9783030709730ApplicationsPositivity预订¥16710去看看中国国际图书专营店发布了【预订】Positivity and its Applications 978303070973025 元券Positivity9783030709730ApplicationsPretoria¥20740去看看澜瑞图书专营店发布了【4周达】Positivity and its Applications : Positivity X, 8-12 July 2019, Pretoria, South Africa [9783030709730]