Straits Settlements Blue Book (imports/exports)  1917-1918 vol.67-68  [microform] : 

 - Great Britain :  Public Record Office,  1971 
 - 1 microfilm reel :  positive ;  35 mm. 
<br/><br/> Mengandungi sambungan kepada'Blue Book for the year 1917';'Blue Book for the year 1918'.