00543 a2200145 4500 631.8 POT 22151 34796 Potassium in the agricultural systems of the humid tropics Proceedings of the 19th colloquium of the international potash institute held in bangkok Bangkok International potash institute 1985 1985 405p. 23cm Fertilizers,soil conditioners,growth regulators Agriculture and related technologies Specific techniques L 49552 49552 0 0 0 0 LEN MKDL MKDL LEN 2009-08-12 0 631.8POT 54239 2009-08-12 00:00:00 0.00 2016-10-31 L 0 0 ddc 0 0 LEN MKDL MKDL LEN 2009-08-12 0 631.8 POT 50085 2009-08-12 00:00:00 0.00 2016-10-31 L