ScienceJohn Michels (Journalist) 1936 |
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Page 109
... described by Black , considerable knowl- edge of glass blowing must be at the command of the technician . The relay described below is much simpler to con- struct and any person with an elementary knowledge 110 V. F- H FIG . 1 A - Pyrex ...
... described by Black , considerable knowl- edge of glass blowing must be at the command of the technician . The relay described below is much simpler to con- struct and any person with an elementary knowledge 110 V. F- H FIG . 1 A - Pyrex ...
Page 122
... described , which should make this instrument much less expen- sive than previous types . W. R. Gregg emphasized the importance of development work on radio - meteoro- graphs and described the successful demonstration of a radio ...
... described , which should make this instrument much less expen- sive than previous types . W. R. Gregg emphasized the importance of development work on radio - meteoro- graphs and described the successful demonstration of a radio ...
Page 132
... described a winter bird com- munity in western New York . Dr. Orlando Park reported further studies in nocturnal ecology : an account of class excursions for field study at night ( with H. F. Strohecker ) ; and a new recording appa ...
... described a winter bird com- munity in western New York . Dr. Orlando Park reported further studies in nocturnal ecology : an account of class excursions for field study at night ( with H. F. Strohecker ) ; and a new recording appa ...
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