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Mulford, Walter. (3775) 



the war-zone forest of the kern. Sierra Club Bull. 10 (2) : 155-158, illus. 

 1917. 



Munns, E. N. (3776) 



SOME BIOLOGICAL AND ECONOMIC ASPECTS OF THE CHAPARRAL. Jour. Forestry 



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Munson, W. M. (3777) 



distribution of plants in forest regions. Maine Forest Commr. Rept. 4: 

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Perry, G. S. (3778) 



distribution of shortleaf pine in Pennsylvania. Forest Leaves 19 (9) : 

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Pool, R. J. (3779) 



AT TIMBER LINE IN THE LAND OF TAHOSA. Sci. Monthly 11 (6) ! 481-501, illUS. 



1920. 



Reed, H. S. ' (3780) 



THE MALIGNANT EFFECT OF CERTAIN TREES UPON SURROUNDING PLANTS. Plant 



World 10: 279-282, illus. 1907. 



Richards, E. C. M. (3781) 



white pine near new york city. Jour. Forestry 21 : 90^91. 1923. 



Rigg, G. B. (3782) 



FOREST DISTRIBUTION IN THE SAN JUAN ISLANDS; A PRELIMINARY NOTE. Plant 



World 16 : 177-182, illus. 1913. 



Robbins, W. W., and Dobbs, G. S. (3783) 



distribution of conifers on the mesas. Colo. Univ. Studies 6 (1) : 31-36. 

 1908, 



RosENDAHL, C. O., and Butters, F. K. (3784) 



on the occurrence of pinus banksiana in southeastern Minnesota. Plant 

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Russell, I. C. (3785) 



TiMBERLiNES, Natl. Geogr. Mag. 14: 80^88; 15: 47-49. 1903. 



Sears, P. B. (3786) 



THE NATURAL VEGETATION OF OHIO: A MAP OF THE VIRGIN FOREST. Ohio JOUT. 



Sci. 25: 139-140, illus. 1925, 



Shaler, N. S. (3787) 



forests of north America. Scribner's Mag. 1: 561-580, illus. 1887. 



Shimek, B. (3788) 



the distribution of forest trees in iowa. Iowa Acad. Sci. Proc 7 : 47-59, 

 illus. 1899. 



Spalding, V. M. (3789) 



"the plains" of Michigan. Amer. Nat. 17: 249-259. 1883, 



Sudworth, G. B., comp. (3790) 



GEOGRAPHIC DISTRIBUTION OF NORTH AMERICAN TREES. U. S. Dept. Agr., Forest 



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 Taylor, Griffith. (3791) 



THE DISTRIBUTION OF FORESTS IN AUSTRALIA. Wealth 4 (2) : 13. 1928, 



Thrupp, A. O. (3792) 



notes on western yellow pine distribution. Forestry Chron. 3 (4) : 21- 

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Transeau, E. N. (3793) 



forest centers of eastern America. Amer. Nat. 39 (468) : 875-889, illus. 

 1905. 



Trenk, F. B. (3794) 



the occurrence of hickories in iowa in relation to soil types. 1st Inter- 

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