003100000a22001210004500060000800000082001800008100001800026245002700044260004000071260000900111300000800120650006000128  a100  a307.76072 GIB  aGibbs, Jack P  aUrban research methods  aToronto, D Van nostrand Company Inc  c1961  a625  aSocial sciences- Community/ Rural development- Research