Research within reach :  elementary school mathematics / 
Mark J. Driscoll [and] CEMREL, Incorporated [and] National Institute of Education. 
 - Reston, Virginia :  National Council of Teachers of Mathematics,  (c)1981. 
 - 141 pages :  illustrations ;  28 cm. 
<br/><br/> "Originally published as separate pieces by the Research and Development Interpretation Service (RDIS) for the Research and Development Exchange (RDx)." 
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<br/><br/><label>LCCN: </label>81217073 //r84 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching (Elementary)<br/>Mathematics--Research.
<br/><br/><label>LC Class. No.: </label>QA135  / .R474 1981