书名原文:An introduction to probability theory and its applications An introduction to probability theory and its applications Introduction to probability theory and its applications 并列题名：Introduction to probability theory and its applications Introduction to Probability theory and its applications An introduction to probability theory and its applications．Volume Ⅰ An introduction to probability theory and its applications．Volume Ⅱ Introduction to Probability theory and its applications Vol 1 Introduction to Probability theory and its applications Vol 1. An introduction to the theory and its applications