Philippine income tax: part 2 /
- 2023 ed.
- Manila : GIC enterprises & co., inc. c2023
- 1496 pages : 23cm.
- vol. 1 .
Part IIIV -- deduction -- Chapter 15. Deduction from gross income -- Questions and problems -- Chapter 17. Ordinary and necessary trade, business, or professional expenses -- Chapter 18. Interest and taxes -- Chapter 19. Bad debts and losses -- Chapter 20. Depreciation and depletion -- Chapter 21. Pension trust and charitzble and other contributions -- Chapter 22. Research and development.