MIL-N-494A (NOTICE-1), MILITARY SPECIFICATION: NITROGUANIDINE (PICRITE) (11-JAN-2013)
MIL-N-494A (NOTICE-1), MILITARY SPECIFICATION: NITROGUANIDINE (PICRITE) (11-JAN-2013)., MIL-N-494A, dated 22 March 1968, is inactive for new design, and is no longer used, except for
replacement purposes.