@Article{ Stojanova-_HRISTOVA:1-4,

author = { Zlatka Stojanova- and MARIA HRISTOVA VASSILEVA } ,

title = { EFFECT OF THE VARIOUS ZINC CONCENTRATIONS OF THE NUTRIENT SOLUTION ON BIOMASS QUANTITY, MINERAL COMPOSITION AND PIGMENT CONTENT IN LETTUCE (LACTUCA SATIVA L.) },

journal = { Journal of Plant Physiology },

year = { 1993 },

pages = { 1-4 },

}