5 1 10 Manual for Asphalt Pavement Japan Road Association Primary Author mixed material Japan Japan Road Association 1989 WhatsApp_Image_2023-12-13_at_10.19.04.jpeg.jpeg Japan Road Association Primary Author mixed material Tokyo Japan Road Association 1980 WhatsApp_Image_2023-10-18_at_08.37.59.jpeg.jpeg Specifications for Highway Bridges - Part II Steel Bridges Japan Road Association Primary Author mixed material 9784889507119 Japan Japan Road Association 2002 spec1.jpg.jpg Specifications for Highway Bridges - Part III Concrete Bridges Japan Road Association Primary Author mixed material 9784889507108 Japan Japan Road Association 2002 spec.jpg.jpg Japan Road Association Primary Author mixed material Japan Road Association 1989