ACT NO. 2152 - AN ACT TO PROVIDE A SYSTEM FOR THE APPROPRIATION OF PUBLIC WATERS, AND FOR THE DETERMINING OF EXISTING RIGHTS THERETO; FOR THE PUBLIC REGISTRATION OF ALL WATER RIGHTS; FOR THE CREATION AND USE OF WATER POWER; FOR INVESTIGATIONS FOR AND THE CONSTRUCTION MAINTENANCE, AND OPERATION OF IRRIGATION SYSTEMS BY THE GOVERNMENT OF THE PHILIPPINE ISLANDS; FOR THE REPAYMENT OF MONEY EXPENDED THEREFOR; FOR THE CONSTRUCTION, MAINTENANCE, AND OPERATION OF IRRIGATION SYSTEMS BY PRIVATE PERSONS; FOR THE INSPECTION AND REGULATION OF ALL WORKS PERTAINING TO THE USE OF WATER; AND PROVIDING PENALTIES FOR ITS VIOLATION; AND FOR OTHER PURPOSES
ACT NO. 2171 - AN ACT REMITTING CERTAIN UNPAID LAND TAXES
ACT NO. 2197 - AN ACT PROVIDING THAT THE ASSESSMENT OF, AND TAX ON, REAL AND PERSONAL PROPERTY SHALL NOT INCLUDE MACHINERY AS HEREIN DEFINED