00433nam a2200157Ia 4500008004100000082001700041100001800058245004900076260003900125300000700164650002300171650001800194653002700212653001600239700002000255170901s1956    xx            000 0 und d  a581.19bT23C  aFawcett, G.S. 0aChemical Testing of Plant Nutrient Solutions  aEnglandbThe Tintometer Ltd.c1956  a84  aBotanical sciences  aPure Sciences  aAgricultural chemistry  aHydroponics  aStoughton, G.S.