Wyss, C. Von . <br/><br/>
The Teaching of Nature Study /  Textual Documents 
C. Von Wyss. 
 - 1st ed. / 
 - London :  A & C Black, Ltd ,  1951. 
 - viii, 102p. :  ill. ;  24cm . 
<br/><br/><label>Subjects--Index Terms: </label>Education-Study and Teaching Teaching-Nature Study MS-Education 
<br/><br/><label>Dewey Class. No.: </label>372.35  / W 996 T