Luther L. Castetter has written:
'A minute a day' -- subject(s): Calendars
Luther L. Terry has written: 'To smoke or not to smoke' -- subject(s): Juvenile literature, Physiological effect, Smoking, Tobacco
Hans Georg Noack has written: 'L' insurrection pacifique de Martin Luther King' -- subject(s): Droits civils, King, Martin Luther, Martin Luther King, Noirs
There is no widely known author named L M Gruitt. It is possible that the author you are referring to uses a different pseudonym or is not well-known in literary circles.
L. Hood has written: 'What, when, and how about why'
L. Salleron has written: 'L' automation'
L. L. Davison has written: 'Stray leaves from \\'
L. L. Paklons has written: 'European bibliography'
L. L. Simons has written: 'Hot on the trail'
L. Cros has written: 'L' explosion scolaire'
L. A. Arieli has written: 'Yeshimon'
I. L. Shumilov has written: 'Stefka'
L. I. Bespalov has written: 'Kleshchi'