Does your business need a new telephone system? / OFTEL
Microsoft SQL Server 2000 administrator's companion / Marci Frohock Garcia...[et al.]
Código do imposto sobre o rendimento das pessoas singulares : comentado e anotado / Herculano Madeira Curvelo...[et al.]
MCSE exam 70-224 training kit : microsoft exchange 2000 server implementation and administration / Kay Unkrotch and Microsoft Corporation