Masani, N.J. 1951. Simple Calculations in the Design of forest Bridges of Stock Spans of 15, 20, 30 and 40 Feet - Part V(b) (Analytical Method). Indian Forester. 77, 3 (Mar. 1951), 192–205. DOI:https://doi.org/10.36808/if/1951/v77i3/23288.