Republic Act No. 3844 of August 8, 1963 (Agricultural Land Reform Code) (Diosdado P. Macapagal) - Abolished share tenancy, institutionalized leasehold, set retention limit at 75 hectares, invested rights of preemption and redemption for tenant farmers, provided for an administrative machinery for implementation, institutionalized a judicial system of agrarian cases, incorporated extension, marketing and supervised credit system of services of farmer beneficiaries.