17. Section 50 of the principal enactment is hereby amended as fallows :
(1) by the repeal of paragraph (b) of that section, and the substitution, of the following paragraph therefor;
| | " (b) for the year of assessment commencing on April 1, 1986, and the year of assessment immediately succeeding that year of assessment, shall not exceed sixty per centum; " ; and | | |
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(2) by the insertion immediately after paragraph (b), of that section of the following new paragraph:
| | " (c) for any year of assessment commencing on or after April 1, 1988, shall not exceed fifty per centum,". | | |
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