APress-BeginningUbuntuLinux-FromNovicetoProfessional-4thEdition-Aug2009

Much has happened in the German-speaking world in the dozen years since the third edition of Schaum抯

Introduction to Linear Algebra 4th edition 《线性代数导论》第四版

Modern Operating Systems, Fourth Edition, is intended for introductory courses in Operating Systems

作者：GeneH.GolubCharles.F.VanLoan高清扫描版

Modern Operating Systems 2014年第四版，经典计算机教材

UNIXandLinuxSystemAdministrationHandbook,4thEdition，非扫描高清英文版

这本书使用函数语言schemer，从简单到复杂，一步步理解递归的本质与妙用，非常值得一看

LinearandNonlinearProgramming4th-Springer带书签

DigitalSignalProcessingPrinciplesAlgorithmsandApplications4thEditionAuthor:JohnG.Proakis

AGuidetotheProjectManagementbodyofknowledge(PMBOKGuide)fourthEdition