Investigator-Inspector (C-378): Passbooks Study Guide Volume 378National Learning CorporationEsauritoAvvisami
Public Health Nutritionist (C-632): Passbooks Study Guide Volume 632National Learning CorporationEsauritoAvvisami
The Montessori Method; Scientific Pedagogy as Applied to Child Education in 'The Children's Houses' with Additions and Revisions by the AuthorMaria MontessoriEsauritoAvvisami
Supervising Food Inspector: Passbooks Study Guide Volume 2055National Learning CorporationEsauritoAvvisami
Associate Public Health Engineer (C-4439): Passbooks Study Guide Volume 4439National Learning CorporationEsauritoAvvisami
Laboratory Supervisor (C-3198): Passbooks Study Guide Volume 3198National Learning CorporationEsauritoAvvisami
Labor Specialist III, IV, V (C-4775): Passbooks Study Guide Volume 4775National Learning CorporationEsauritoAvvisami
Forestry Technician II. III (C-4795): Passbooks Study Guide Volume 4795National Learning CorporationEsauritoAvvisami
Mapping Technician III (C-4796): Passbooks Study Guide Volume 4796National Learning CorporationEsauritoAvvisami
Staff Social Worker (C-4671): Passbooks Study Guide Volume 4671National Learning CorporationEsauritoAvvisami