00373nam a2200169Ia 4500008004100000041001200041082001100053082001100064100001800075100001100093245002800104250001200132260001100144260002200155260000900177650001700186150901s9999    xx            000 0 und d  aEnglish  a300.18  bFOW/SU  aFlower  F J    eAuthor  aSurvey research methods  a3rd Ed.  aLondon  bSage publications  c2002  aSoil Science