TY - BOOK AU - Agnosteva,Delina E. AU - Anderson,James E. AU - Yotov,Yoto V. ED - National Bureau of Economic Research. TI - Intra-national Trade Costs: Measurement and Aggregation T2 - NBER working paper series PY - 2014/// CY - Cambridge, Mass. PB - National Bureau of Economic Research N1 - January 2014; Hardcopy version available to institutional subscribers N2 - We develop and apply a procedure to flexibly estimate intra-national border barriers and intra-regional trade costs. Bilateral border barriers very significantly depress Canadian inter-provincial trade for some pairs, though the overall effect is rather small. Bilateral distance imposes much larger inter-provincial trade costs. Contiguity between provinces accounts for little. Intra-regional trade cost variation affects relative bilateral costs and trade flows, and alters comparative statics except in a neutral case rejected by the data. Consistent trade cost aggregation procedures are developed and applied for groups of regions and/or sectors UR - https://www.nber.org/papers/w19872 UR - http://dx.doi.org/10.3386/w19872 ER -