0
1 ocm06593024
2 Instructions for airway observers / U S Dept of Agriculture Weather Bureau
3 United States Weather Bureau
3 United States Weather Bureau
4 United States Weather Bureau Handbooks manuals etc
4 Clouds Instruments
4 Cloudiness Measurement Handbooks manuals etc
4 Meteorological instruments
4 Visibility Measurement Handbooks manuals etc
4 Winds Measurement Handbooks manuals etc
4 in aeronautics United States Observers' manuals
4 Airways
4 United States Observers' manuals
4 Atmospheric pressure Measurement Handbooks manuals etc
4 Atmospheric temperature Measurement Handbooks manuals etc
4 Precipitation Measurment Handbooks manuals etc
6 QC983 .C57 no.N 1st ed. 1928
7 no.n-1st.ed-1928
10 D:\CIRC_002\CIRC-0107.PDF
0
1 ocm10968973
2 Instructions for airway observers / U S Dept of Agriculture Weather Bureau
3 United States Weather Bureau
4 Winds Measurement Handbooks manuals etc
4 in aeronautics United States Observers' manuals
4 Airways
4 United States Observers' manuals
4 Atmospheric pressure Measurement Handbooks manuals etc
4 Atmospheric temperature Measurement Handbooks manuals etc
4 Precipitation Measurment Handbooks manuals etc
4 United States Weather Bureau Handbooks manuals etc
4 Clouds Instruments
4 Cloudiness Measurement Handbooks manuals etc
4 Meteorological instruments
4 Visibility Measurement Handbooks manuals etc
6 QC983 .C57 no.N 2nd ed. 1932
7 no.n-2nd.ed-1932
10 D:\CIRC_002\CIRC-0108.PDF
0
1 ocm01382744
2 Instructions for airway meteorological service / U S Dept of Agriculture Weather Bureau
3 United States Weather Bureau
4 Clouds Instruments
4 Cloudiness Measurement Handbooks manuals etc
4 Meteorological instruments
4 Visibility Measurement Handbooks manuals etc
4 Winds Measurement Handbooks manuals etc
4 in aeronautics United States Observers' manuals
4 Airways
4 United States Observers' manuals
4 Atmospheric pressure Measurement Handbooks manuals etc
4 Atmospheric temperature Measurement Handbooks manuals etc
4 Precipitation Measurment Handbooks manuals etc
6 QC983 .C57 no.N 3rd ed. 1935
7 no.n-3rd.ed-1935
10 D:\CIRC_002\CIRC-0109.PDF
0
1 ocm35031196
2 Instructions for airway meteorological service / U S Dept of Agriculture Weather Bureau
3 United States Weather Bureau
4 United States Weather Bureau Handbooks manuals etc
4 Clouds Instruments
4 Cloudiness Measurement Handbooks manuals etc
4 Meteorological instruments
4 Visibility Measurement Handbooks manuals etc
4 Winds Measurement Handbooks manuals etc
4 in aeronautics United States Observers' manuals
4 Airways
4 United States Observers' manuals
4 Atmospheric pressure Measurement Handbooks manuals etc
4 Atmospheric temperature Measurement Handbooks manuals etc
4 Precipitation Measurement Handbooks manuals etc
6 QC983 .C57 no.N 4th ed. 1939
7 no.n-4th.ed-1939
10 D:\CIRC_002\CIRC-0110.PDF