Title 41 sets forth practices of wage determination, health and safety standards, regulations governing purchase from people who are blind or severely disabled, and employment practices expected of federal contractors. The system for property management covers inventories, management and use of records, acquisition, construction and alteration of public buildings. Procurement of products, management and use of telecommunications resources, management of means of transportation and travel expenditures and reimbursement are included as well. Additions and revisions to this section of the code are posted annually by July. Publication follows within six months.