00277nam a2200109Ia 4500082001900000245005900019260003900078700000500117500000500122100002500127300001500152  a338.9bH459.AM  aAllocation models and their use in Economic planningb  aHollandbReidel Publicationsc1971  a  a  aHeesterman, A. R. G.  axiv, 203p.