00400nam a22001217a 450000500170000000800410001704000130005808200210007110000270009224501180011926000330023730000080027020180702150351.0180702b        xxu||||| |||| 00| 0 eng d  cPK-LaUMT  aMJC 304.6bROB-E  aRobert Malthus, Thomas  aAn essay on the principle of population and a summary view of the principle of population/cThomas Robert Malthus  aLondon:bPenguin booksc1970  a291