00321nam a2200097Ia 4500008004100000082002900041100003100070245009500101260002000196300000700216140113s9999    xx            000 0 und d  a631.811:581.14:633.2  J9  a"Williams, Dorrington. R."  aMinor elements and their effects on the growth and chmemical composition of herbase plants  a1963bCABcU.K.  a99