000 00333 am a2200121 a 4500
100 1 _aMattoon, Wilbur R.
245 1 _aPruning southern pines
260 _aWashington
_c1942
300 _a1-34 p.
942 _2udc
_cB
440 _aPruning, Pines United States Department of Agriculture. Farmers Bulletin No. 1892
901 _aS12533
999 _c104478
_d104478