你能告诉我阅览室中的书籍数量吗？
阅览室里有三百余册的盲文书籍。[{'character': '阅', 'pinyin': 've4', 'highest pitch': 11.31, 'lowest pitch': 10.37, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '览', 'pinyin': 'lan3', 'highest pitch': 10.37, 'lowest pitch': 6.49, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '室', 'pinyin': 'shiii4', 'highest pitch': 10.79, 'lowest pitch': 8.73, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '里', 'pinyin': 'li3', 'highest pitch': 8.73, 'lowest pitch': 5.37, 'duration': 0.28, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.12}, {'character': '有', 'pinyin': 'iou3', 'highest pitch': 8.43, 'lowest pitch': 7.09, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '三', 'pinyin': 'san1', 'highest pitch': 11.16, 'lowest pitch': 7.58, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '百', 'pinyin': 'bai3', 'highest pitch': 11.15, 'lowest pitch': 6.18, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '余', 'pinyin': 'v2', 'highest pitch': 6.63, 'lowest pitch': 5.91, 'duration': 0.14, 'prosody hierarchy': 'null'}, {'character': '册', 'pinyin': 'ce4', 'highest pitch': 9.0, 'lowest pitch': 6.31, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 7.02, 'lowest pitch': 6.0, 'duration': 0.15, 'prosody hierarchy': '#2'}, {'character': '盲', 'pinyin': 'mang2', 'highest pitch': 8.43, 'lowest pitch': 6.0, 'duration': 0.25, 'prosody hierarchy': 'null'}, {'character': '文', 'pinyin': 'uen2', 'highest pitch': 8.51, 'lowest pitch': 7.24, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '书', 'pinyin': 'shu1', 'highest pitch': 9.1, 'lowest pitch': 7.82, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '籍', 'pinyin': 'ji2', 'highest pitch': 7.82, 'lowest pitch': 6.18, 'duration': 0.35, 'prosody hierarchy': '#4'}]