a dtd for a standard sgml doc-ment type for scientific doc-ments, defined by the -ssociation of american publishers.
aapaa american -ssociation of psychiatrists in alcoholism and addictions
aapb -ssociation for applied psychophysiology and biofeedback
aapc american -ssociation of pastoral counselors
aapcc american -ssociation of poison control centers
aapco -ssociation of american pesticides control officers