A5尺寸,a5本

a0a1a2a3a4a5a6a7a8纸尺寸
b5和a5哪个尺寸大?
cagie卡杰]6孔a5空白活页芯 替换
1pc matte transparent a4/b5/a5/a6/a7 loose-leaf notebook case
a5尺寸