00377nam a2200121Ia 450000500170000000800410001702000150005805000150007310000170008824500770010526000340018265000390021620251229085659.0251229s9999    xx            000 0 und d  a0471941433  aS625 .T54   aTiffen, Mary 0aMore people, less erosionb environmental recovery in KenyacMary Tiffen  aChichesterb John Wileyc1994  aSoil Conservation - Kenya Machakos