haversian spaces-spaces in bone formed by the enlargement of haversian canals. haversian system-a central canal containing capillaries and the concentric osseous lamellae around it occurring in compact bone.
Any donation to a political party, campaign, or action committee is non-deductible. Other non-deductible contributions are those to individual people, labor unions, business associations, for-profit schools, for-profit hospitals, foreign governments, and fees paid to associations or state or municipal governments.
Hereâs what you need to know about what you can and cannot deduct: 1  Monetary contributions â Cash or other monetary contributions may be tax deductible as long as they are not set aside for use by a specific person. 2  Donations of property, including business inventory â These are also considered a valid tax deduction.