9ALTEINSON W O,LINK L A, BORTNER C. E[J] Effects of potassium fertilizerer on yield value and chemical composicion of brrley[J]. Tobacco sci,1962(6) :110 - 113.
10ALTEINSON WO,LINK L A, BORTNER C. Effects of potassium fertilizerer on yield value and chemical composicion of brrley tovacco[J]. Sci, 1962,6:110- 113.