Section 17
SEC. 17. This Act shall take effect immediately upon approval. However, the rates prescribed in Section 3 of this Act shall take effect as follows: On timber in the first and second groups, twenty pesos per cubic meter until March 31, 1981, and thereafter the full rate of thirty pesos per cubic meter shall be imposed; On timber in the third and fourth groups not including fuelwood, ten pesos per cubic meter until March 31, 1981, and thereafter the full rate of fifteen pesos per cubic meter shall be imposed. Approved, September 17, 1980.