Biology of dwarf mistletoes : proceedings of the symposium, August 8, 1984, Colorado State University, Fort Collins / Frank G. Hawksworth and Robert F. Scharpf, technical coordinators ; sponsored by Rocky Mountain Forest and Range Experiment Station ... [et al.] (General technical report RM ; 111)
Biology of dwarf mistletoes : proceedings of the symposium, August 8, 1984, Colorado State University, Fort Collins / Frank G. Hawksworth and Robert F. Scharpf, technical coordinators ; sponsored by Rocky Mountain Forest and Range Experiment Station ... [et al.]