1540) Peterson, Roger S. 



1960. Western gall rust on hard pines. U.S. Forest Serv. Forest Pest Leafl. 50, 8 pp. 



1541) 

 1542) 



1962. Notes on western rust fungi . III. Cronartium . Mycologia 54: 678-684. 



1962. Comandra blister rust in the central Rocky Mountains. U.S. Forest Serv. 



Rocky Mountain Forest and Range Exp. Sta. Res. Note 79, 6 pp. 



1543) and R. G. Shurtleff, Jr. 



1965. Mycelium of limb rust fungi. Amer. J. Bot. 52: 519-525. 



1544) Petheram, H. D. 



1933. Water storage of forest planting stock. J. Forest. 31: 567-569. 



1545) Phillips, Frank J. 



1907. Planting on New Mexico Forest Reserves. Forest. Quart. 5: 11-19. 



1546) Philpot, Charles W. 



1963. The moisture content of ponderosa pine and whiteleaf manzanita foliage in the 



central Sierra Nevada. U.S. Forest Serv. Res. Note PSW-39, 7 pp. 



1547) 



1965. Diurnal fluctuation in moisture content of ponderosa pine and whiteleaf manzanita 

 leaves. U.S. Forest Serv. Res. Note PSW-67, 7 pp. 



1548) Pielou, E. C. 



1960. A single mechanism to account for regular, random, and aggregated populations. 



J. Ecol. (England) 48: 575-584. 



1549) 



1961. Segregation and symmetry in two-species populations as studied by nearest 



neighbour relationships . J. Ecol. (England) 49: 255-269. 



1550) 



1962. Runs of one species with respect to another in transects through plant popula- 



tions. Biometrics 18: 579-593. 



1551) Pieper, Rex D., and H. H. Biswell. 



1961. Relationship between trees and cattle in ponderosa pine. Calif. Agr. 15(5): 12. 



1552) Pierce, Donald A. 



1961. Classes of ponderosa pine in New Mexico and Arizona susceptible to attack by 

 southwestern pine beetle and associated bark beetles. U.S. Forest Serv. 

 Rocky Mountain Forest and Range Exp. Sta. , Sta. Pap. 64, 9 pp. 



1553) Pike, Galen W. 



1927. The relation of the viability of seed to the age of the parent tree. Ida. Forest. 

 9: 17-18. 



1554) 



1934. Girdling of ponderosa pine by squirrels . J. Forest. 32: 98-99. 



1555) Pissot, Henry J. 



1953. Forest resources of north Idaho. U.S. Forest Serv. Northern Rocky Mountain 

 Forest and Range Exp. Sta., Sta. Pap. 35, 37 pp. 



1556) 



1965. New Mexico's forest area and timber volume. U.S. Forest Serv. Res. Note 

 INT-32, 4 pp. 



1557) and Harold E. Hanson. 



1963. The forest resource of western Montana. U.S. Forest Serv. Resource Bull. 

 INT-1, 39 pp. 



96 



