牧羊犬:

您好,

建議要查MARC 21每個欄位的輸入約定，有的是$a後題名加句點，欄位結束時不加句點 (如240字段)；有的是$a後之題名不加句點，欄位結束時要加句點 (如245字段)：

一、240的輸入約定

Punctuation:

Field 240 does not end with a mark of punctuation unless the last word in the field is an abbreviation, initial/letter, or data that ends with a mark of punctuation.

See also subfield descriptions in X30 Uniform Title - General Information for punctuation information.

240字段在整個結束時是不加標點的，除非字段中的最後一個字是縮寫、首字母或字母，或有其他標點符號，如作區辨性用的( )

    110 2# $aCatholic Church.
    240 10 $aMissal (Dominican) → 240最後結尾是( )，不再加句點

    100 1# $a Porta, Giambattista della,$d1535?-1615.
    240 10 $a Duoi fratelli rivali. $l English
                ※ 240$a結尾用句點，因後有$l的關係，但$lEnglish最後結尾是沒有句點的
    245 14 $a Gli duoi fratelli rivali =$bThe two rival brothers /$cGiambattista della Porta ; edited and translated by Louise George Clubb.

    100 1# $a Bullett, Gerald William,$d1894-1958.
    240 10 $a Poems. $kSelections → 240最後結尾不加句點
    245 10 $a Poems /$cby Gerald Bullett.

二、245的輸入約定
     Punctuation:
     Field 245 ends with a period, even when another mark of punctuation is present, unless the last word in the field is an abbreviation, initial/letter, or data that ends with final punctuation.

     欄位245以句點結束，除非字段中的最後一個字是縮寫、首字母或字母，或有其他標點結尾。
245  10  $aCosmic search.
245  00  $aMarcel Marceau, ou, L'art du mime.
245  10  $aWelcome aboard! :$byour career as a flight attendant /$cBecky S. Bock, Cheryl A. Cage. → 245最後結尾加句點
245  10  $aAnnual report for fiscal year ... →結尾是其他標點時，不再加句點
245  00  $aWho is it?
245  10  $aHearne Brothers official polyconic projection map of Greater Knoxville with all of Knox County /$cHearne Brothers, cartographers; production staff, G.
              Lee Graham ... [et. al.].
245  10  $aAhab's wife, or, The star-gazer :$ba novel /$cby Sena Jeter Naslund ; illustrations by Christopher Wormell.
245  00  $aRubber world$h[microform].
245  10  $aMoby-Dick, or, The whale /$cby Herman Melville.

其他—
246 $a及字段最後都不加句點
247 $a及字段最後都不加句點
130,630,730和830字段，以標點符號或右括號結束。 如果最後的子字段是子字段$2，$3或$5，則標點符號或右括號的標記在這些子字段之前。
500 除非另有標點符號，否則字段500以句點結尾。

錢月蓮敬答  20171104