Science focus  The Salters' approach 1 : Introduction / 
Mary Aitken et al. 
 - Oxford :  Heinemann Educational ,  1992. 
 - 59 p. 
<br/><br/><label>ISBN: </label>0-435-63015-6  400.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Наука - методика