00270nam a2200109Ia 450000500170000000800410001708200140005810000170007224500210008926000420011030000080015220260224041012.0260224s9999||||xx |||||||||||||| ||und||  a631.4 SAH  aSahai, V.N.  0aSoil at a glance  aLudhiana : Kalyani Publicationsc2004  a302