主題:數量方法
https://docs.google.com/viewer?a=v&q=cache:NEugvayIKOMJ:giib.ntpu.edu.tw/download.php%3Ffilename%3D59_f1e848e5.doc%26dir%3Darchive%26title%3D%25E6%2595%25B8%25E9%2587%258F%25E6%2596%25B9%25E6%25B3%2595+&hl=zh-TW&pid=bl&srcid=ADGEESg1_mDjGtSZMtnqJ9NUPg9jwjV-LTD1JfQ3B3KMBfBVevTrBxD5ZAaUcJLr-AgciO6h29n5dxvPKGnGTdwTu9xuOXfZU2mo0l88nWXa_EtBsOckUMmVfChWe2fyqKL-juXzmVoD&sig=AHIEtbQObUBE2lYqmBICPNAKLNz3r0EN3w