The Nation's Schools, Količina 42Michael Vincent O'Shea McGraw Hill, 1948 |
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Zadetki 1–3 od 79
Stran 78
... Effective Kill " of flying insects in areas up to 100,000 cu . feet is also accomplished . The West Vapomat actually penetrates the " Hidden Breeding Places " in your building - its tiniest cracks and crevices . Completely automatic ...
... Effective Kill " of flying insects in areas up to 100,000 cu . feet is also accomplished . The West Vapomat actually penetrates the " Hidden Breeding Places " in your building - its tiniest cracks and crevices . Completely automatic ...
Stran 52
... effective supplements to other media of communication . The school administrator must provide a continuous in - service training program for his staff . Teachers should have the most effective and modern teach- ing devices that have ...
... effective supplements to other media of communication . The school administrator must provide a continuous in - service training program for his staff . Teachers should have the most effective and modern teach- ing devices that have ...
Stran 62
... effective under cer- tain conditions , with triethlene glycol being effective in a much less con- centrated form than propylene glycol . Glycols are most effective in tempera- tures of less than 72 ° F. and a rela- tive humidity of 35 ...
... effective under cer- tain conditions , with triethlene glycol being effective in a much less con- centrated form than propylene glycol . Glycols are most effective in tempera- tures of less than 72 ° F. and a rela- tive humidity of 35 ...
Vsebina
THE NATIONS | 4 |
AudioVisual Aids | 52 |
SHIBLÉR and L H VALADE | 62 |
Avtorske pravice | |
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