00497nam a22001337a 4500008004100000040005500041080001700096100002300113245009300136260007900229650002100308653001500329653001900344230320b        |||||||| |||| 00| 0 eng d  aNational Science LibrarycNational Science Library  aD 681.3 bL71 aBarbers, Anthony J  aComputer science & technology: bAn architecture for a robot hierarchical control system  aWashington D. C.:bNational Bureau of Standards Special Publication,c1977  aComputer science  aTechnology  aControl system