210.17 Mason work or stone. The perch of mason work or stone shall consist of twenty-five feet, cubic measure. [C51, §939; R60, §1777; C73, §2050; C97, §3017; C24, 27, 31, 35, 39, §3243; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §210.17]
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