. . . "Why do plants starve?; Plant-nutrient deficiency in tobacco; Deficiency symptoms of corn and small grain; Plant-nutrient deficiency symptoms in the potato; Plant-nutrient deficiency symptoms in cotton; Plant-nutrient deficiences in vegetable or truck crops; Nutrient-deficiency symptions in deciduous fruits; Plant-nutrient deficiency symptions in legumes; Symptions of citrus malnutrition." . . . . . . . . "Hunger signs in crops; a symposium" . "Hunger signs in crops; a symposium"@en . . . . . . . . . . . . . . . . "Hunger signs in crops" . "Hunger signs in crops"@en . . . . . . . . "Hunger signs in crops : a sympo" . . . . "Hunger signs in crops : a symposium, prepared by george M. Bahrt [And others]" . . . . . . . . . "Hunger signs in crops a symposium"@en . "Hunger signs in crops a symposium" . "Hunger signs in crops : A symposium" . "Hunger signs in crops: A symposium" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "Conference papers and proceedings" . . . "Hunger signs in crops : a symposium"@en . . . . "Hunger signs in crops : a symposium" . . . . . . . . . . "National Fertilizer Association (Estats Units d'Amèrica)" . . "Congressos." . . "National Fertilizer Association (1925- )" . . "Landbrugsplanter" . . "Plant diseases." . . "Enfermedades por carencia en las plantas." . . "Patologia vegetal." . . "Deficiency diseases in plants." . . "Malalties per manca." . . "Plant nutrition." . . "Deficiency diseases of plants." . . "Nutrició vegetal." . . "Plants-Nutrition." . . "Plants Nutrition." . "Desnutrició." . . "Manures and fertilizers." . . "Nutrició de les plantes." . . "The National Fertilizer Association" . . "Crops." . . "American Society of Agronomy." . . "Malalties per carència." . . "National Fertilizer Association." . . "National Fertilizer Association" . "Plantefysiologi" . . . . "Fertilizers and nanures." . . "Deficiency diseases in plants Congresses." . . "Hunger signs in crops. symposium" . . "Hunger Signs in Crops. Symposium" . "Hunger signs in crops. symposium." .