{HEAD ~ The present invention} is also directed to {TAIL ~ a process} for manufacturing a gypsum based substrate 
directed to
{ HEAD ~ The present invention } is also directed to { TAIL ~ a process } for manufacturing a gypsum based substrate
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH