Explanation handbook of specification of seismic design for highway engineering 并列题名:Explanation handbook of specification of seismic design for highway engineering Explanation handbook of specifications for design of highway subgrades Application handbook of specifications for drainage design of highway 并列题名:Explanation handbook of specifications for design of highway subgrades Textbook of hydrological specifications for survey and design of highway engineering 并列题名:Textbook of hydrological specifications for survey and design of highway engineering Hydrological specifications for survey and design of highway engineering 并列题名:Hydrological specifications for survey and design of highway engineering Application handbook of technical specification for construction of highway subgrades