@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 },

issn = { 0176-1617 },

pages = { 1-4 },

}