00404nam a2200145Ia 4500008004100000082001800041100001800059245004600077260003700123300000800160650003400168650001800202653002400220653001400244170901s1958    xx            000 0 und d  a546.392bJ14M  aJacob, Dr. A. 0aMagnesiumbThe Fifth Major Plant Nutrient  aLondonbStaples Press Ltd.c1958  a159  aChemistry and allied sciences  aPure Sciences  aInorganic chemistry  aMagnesium