00315nam a2200109Ia 4500008004100000082002600041245005900067260002600126650001900152650001800171700001600189220204s9999    xx            000 0 und d  a633:631.811581.1bGUP 0aPhysiological aspects of crop nutrition and resistance  aDelhibAtma Ramc1977  aCrop nutrition  aIon transport  aGUPTHA, U S