Will you please suggest me some of the best books for the preparation of IES - Civil Engineering Exam???

Here I am suggesting you some of the best books for the preparation of IES - Civil Engineering Exam

Strength of Materials /Mechanics of Structure Gare & Timoshenko, E.Popove, L. Singer, B.C. Punamia
Theory of Structures/ Analysis of Structure S. Ramamurtham, L.S. Negi & Jangit, Gupta & Pandit, C.S. Reddy
PERT –CPM by B.C. Punamia
Engineering Economy & unsolved Problems on PERT-CPM by U.K. Shrivastav
Equipment by PEURIFOY
Soil Mechanics & Foundation Engineering Gopal Ranjan & Rao,Venkat Ramaiha, S. K. Garg, B.C. Punamia
Fluid Mechanics and Fluid Machines Modi & Seth, R. K. Bansal, A.K.Jain K.Subramanyam, Jagdish Lal.
Environmental Engineering B.C. Punamia(Part I & II), S.K. Garg (Part-I & II), Peavy, Metcalf & Eddy
Highway Engineering Khanna & Justo, Kadiyali
Railway Engineering Saxena & Arora
Airport Engineering Saxena & Arora
Docks & Harbors’ Rangwala
Building Materials Rangwala, M.L. Gambhir
R.C.C. Design B.C. Punamia, A.K. Jain,
Steel Design S.K. Duggal, L.S. Negi,
Plastic Analysis Manicka Selvam