000 00308 am a2200121 a 4500
100 1 _a
_d
245 1 _aHandbook of agronomy
260 _aVirginia
_c1959
300 _a1-167 p.
942 _2udc
_cB
440 _aAgronomy Virginia Polytechnic Institute, Agronomy Department. Bulletin No. 97
901 _aS4014
999 _c105298
_d105298