Lagal, Roy. Modern electronic prospecting / by Roy Lagal and Charles Garrett. - 1st ed. print. - Dallas, TX. : Ram Pub. Co., 1988. - 81 p. : col. ill. - 622/.1841 . ISBN: 0915920581 (pbk.) Subjects--Topical Terms: Prospecting.Electronic apparatus and appliances. Dewey Class. No.: 622/.1841