Pamphlets on Conservation of Natural Resources, Volumen6U.S. Government Printing Office, 1913 |
Dentro del libro
Resultados 1-5 de 100
Página 10
... present . We know that this is not true . We know that without proper utilization there can be no conservation worthy of the name . We know that perpetuation can be best achieved by present use along scientific lines , and it is to this ...
... present . We know that this is not true . We know that without proper utilization there can be no conservation worthy of the name . We know that perpetuation can be best achieved by present use along scientific lines , and it is to this ...
Página 12
... present Congress was organized with the view of meeting , to some extent at least , the conditions which existed . The Con- servation Congress offered the first essential in the way of a recognized national organization , with which ...
... present Congress was organized with the view of meeting , to some extent at least , the conditions which existed . The Con- servation Congress offered the first essential in the way of a recognized national organization , with which ...
Página 13
... present or future revision of the reports . Most of the subjects will continually develop new phases , and what is up to date or advanced thought or information to - day may be obsolete to - morrow . At the same time , there are ...
... present or future revision of the reports . Most of the subjects will continually develop new phases , and what is up to date or advanced thought or information to - day may be obsolete to - morrow . At the same time , there are ...
Página 32
... present it in the form that publishing experience has proved necessary . And that is all there is to it . If we sincerely believe the spreading of this information is desirable , it is our duty to learn how to adapt it to established ...
... present it in the form that publishing experience has proved necessary . And that is all there is to it . If we sincerely believe the spreading of this information is desirable , it is our duty to learn how to adapt it to established ...
Página 37
... Present tendency is away from cloth or metal posters , once preferred for durability , and toward a jute tag - board or fibre which takes coloring work well . 150 - lb . stock ( 24x36 ) is about right . Thinner paper is weak , thicker ...
... Present tendency is away from cloth or metal posters , once preferred for durability , and toward a jute tag - board or fibre which takes coloring work well . 150 - lb . stock ( 24x36 ) is about right . Thinner paper is weak , thicker ...
Términos y frases comunes
acres administration agricultural American Forestry Association amount annual average camp cent Chairman commercial companies conifers Conservation Congress consumer cooperation cost course Douglas fir effect eucalyptus favor Federal Government feet field fire protection fire wardens forest fires forest land forest law forest products forest protection forest schools Forest Service forest taxation Forestry Committee future grades growth hardwood important increase interest investment legislation logging lumber lumber industry lumbermen manufacturing meeting methods mill moisture mountains national forests operations Oregon organization patrol patrolmen planting possible practical precipitation present private forestry private owners problem profit property tax railroad ranger school reason reforestation region revenue sections secure silvicultural soil spark arresters species stumpage sub-committee supply timber land timber owners tion town trees utilization waste white pine woods yellow pine yield tax