Standard Specifications for Road and Bridge works – 2073
http://idoramechhap.p3.gov.np/wp-content/uploads/2019/08/Standard-Specifications-for-Road-and-Bridge-works-2073.pdf
http://idoramechhap.p3.gov.np/wp-content/uploads/2019/08/Standard-Specifications-for-Road-and-Bridge-works-2073.pdf