TY - BOOK ID - 133743106 TI - Potassium, magnesium and calcium requirements of Virginia pine, published by Northeastern Forest Experiment Station, Forest Service, U.S. Department of Agriculture PY - 1962 PB - Upper Darby, Pa Northeastern Forest Experiment Station, Forest Service, U.S. Department of Agriculture DB - UniCat KW - Nutrition KW - Scrub pine KW - Trace elements KW - Trees UR - https://www.unicat.be/uniCat?func=search&query=sysid:133743106 AB - ER -