Some Aspects of Socio-Economic Planning, P.R. Sarkar
Plan according to the needs of the lowest level; the drainage of money from one region to another must be checked; barter in preference to export, etc.; some practical examples.
Block-level Planning, P. R. Sarkar
Four principles of planning: cost of production, productivity, purchasing capacity, and collective necessity; inter-block planning, proper balance and equipose (prama).
An Introduction to Block Level Planning, PRI, USA (pdf)